The Journal of Contemporary Dental Practice

Register      Login

Table of Content

2011 | July-August | Volume 12 | Issue 4

EDITORIAL

Carlos Rocha Gomes Torres

How much bond strength do we need?

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:1] [Pages No:0 - 0]

PDF  |  DOI: 10.5005/jcdp-12-4-i  |  Open Access |  How to cite  | 

RESEARCH ARTICLE

AU Chaudhari, VM Karhadkar, PF Waghmare, AS Jamkhande

Comparative Evaluation of Turmeric and Chlorhexidine Gluconate Mouthwash in Prevention of Plaque Formation and Gingivitis: A Clinical and Microbiological Study

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:4] [Pages No:221 - 224]

PDF  |  DOI: 10.5005/jp-journals-10024-1038  |  Open Access |  How to cite  | 

Abstract

Aim

To compare the efficacy of turmeric mouthwash and chlorhexidine gluconate mouthwash in prevention of gingivitis and plaque formation.

Materials and methods

A total of 100 randomly selected subjects visiting the Department of Periodontology at Bharati Vidyapeeth Deemed University, Dental College and Hospital, were considered for the study. The gingival index (GI) by Loe and Silness was recorded which was followed by Turesky- Gilmore-Glickman modification of Quigley Hein plaque index (TQHPI) at 0, 14 and 21 days. Individuals who gave an informed consent, subjects in the age group of 25 to 35 years with having fair and poor gingival index scores and a score >1 for plaque index, were included in the study.

Results

Results showed statistically significant reduction (p < 0.05) in mean plaque index (PI) with chlorhexidine gluconate mouthwash when compared with turmeric mouthwash. No significant difference in mean gingival index (GI) was seen when chlorhexidine mouthwash was compared with turmeric mouthwash. Significant reduction in total microbial count (p < 0.05) was observed in both the groups. No significant difference was observed in total microbial count when chlorhexidine mouthwash was compared with turmeric mouthwash.

Conclusion

From the above observations, it can be concluded that chlorhexidine gluconate as well as turmeric mouthwash can be effectively used as an adjunct to mechanical plaque control methods in prevention of plaque and gingivitis. Chlorhexidine gluconate has been found to be more effective when antiplaque property was considered.

Clinical significance

From this study, it could be stated that turmeric is definitely a good adjunct to mechanical plaque control. Further studies are required on turmeric based mouthwash to establish it as a low cost plaque control measure.

How to cite this article

Waghmare PF, Chaudhari AU, Karhadkar VM, Jamkhande AS. Comparative Evaluation of Turmeric and Chlorhexidine Gluconate Mouthwash in Prevention of Plaque Formation and Gingivitis: A Clinical and Microbiological Study. J Contemp Dent Pract 2011;12(4): 221-224.

RESEARCH ARTICLE

Naser Asl Aminabadi, Azin Sohrabi, Sina Ghertasi Oskouei, Behjat Almolook Ajami

Can Birth Order Affect Temperament, Anxiety and Behavior in 5 to 7-year-old Children in the Dental Setting?

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:7] [Pages No:225 - 231]

PDF  |  DOI: 10.5005/jp-journals-10024-1039  |  Open Access |  How to cite  | 

Abstract

Aim

The aim of this study was to evaluate the relationships between birth order and child's temperament, anxiety and behavior in the dental setting.

Materials and methods

A total of 200 healthy children aged 5 to 7 years, were included in this double-blind randomized controlled trial. The study consisted of two sessions. In the initial appointment, parents were provided with instructions and asked to complete children's behavior questionnaire (CBQ). In the second appointment, identical dental treatments were rendered to all subjects. During treatment, Frankl scale for child's behavior, facial Image scale (FIS) for situational anxiety, and clinical anxiety rating scale for clinical anxiety were utilized. Analysis of data was done using U Mann-Whitney and Kruskal-Wallis tests.

Results

Only children had higher clinical (p = 0.041) and situational (p < 0.001) anxiety, and more negative behavior (p = 0.013) compared to children with siblings. In children with siblings, first-born child was in increased risk of developing negative behavior (p = 0.008), clinical anxiety (p < 0.001) and situational anxiety (p = 0.006). With an exception (sadness, p < 0.001), no significant differences in temperament scale were observed among children with different birth orders.

Conclusion

According to the results, only children and laterborns are at higher risk of developing worse outcomes in the dental setting.

Clinical significance

The role of birth order has been ignored as a possible factor of behavior during routine dental treatment and these findings may shed light on our understanding of behavior management strategies in the dental setting. Considering the increasing pattern of family with an only child both in modern and developing countries, this is more likely that the dental team will face children with negative outcome during dental treatment.

How to cite this article

Aminabadi NA, Sohrabi A, Erfanparast L, Oskouei SG, Ajami BA. Can Birth Order Affect Temperament, Anxiety and Behavior in 5 to 7-year-old Children in the Dental Setting? J Contemp Dent Pract 2011;12(4):225-231.

RESEARCH ARTICLE

Vinaya S Pai, S Nandini, M Swetha, N Sanjay

Indirect versus Direct Bonding—A Shear Bond Strength Comparison: An in vitro Study

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:7] [Pages No:232 - 238]

PDF  |  DOI: 10.5005/jp-journals-10024-1040  |  Open Access |  How to cite  | 

Abstract

Aim

The process of bonding orthodontic appliances to the enamel surface of the teeth has come to the forefront as a major improvement in bonding techniques. The purpose of this study is to compare the shear bond strength of stainless steel orthodontic brackets bonded using conventional direct bonding and indirect bonding as described by Thomas.

Materials and methods

Forty sound human premolars were divided into two groups of 20 each. Group I samples were bonded directly on the tooth surface using concise two paste adhesive system after etching and drying. Group II samples were bonded indirectly on the tooth surface according to Thomas indirect bonding technique using concise two paste adhesive system. The stored specimen was tested for shear bond strength in an Instron universal testing machine at a crosshead speed of 0.5 mm/minute. Data obtained were subjected to statistical analysis.

Results

The results showed that there was no statistically significant difference in the shear bond strength between direct and indirect bonding techniques. Chi-square test showed that there were significant differences among the adhesive remnant index scores between direct and indirect bonding groups.

Conclusion

In vitro shear bond strength comparison between direct and indirect-bonded attachments showed no significant difference between the two groups. Bond strength obtained with Thomas indirect bonding technique was comparable with direct bonding technique.

Clinical significance

Thomas indirect bonding technique can be used for bonding of the posterior teeth, where the risk of moisture contamination is high during bonding.

How to cite this article

Swetha M, Pai VS, Sanjay N, Nandini S. Indirect versus Direct Bonding—A Shear Bond Strength Comparison: An in vitro Study. J Contemp Dent Pract 2011; 12(4):232-238.

RESEARCH ARTICLE

Marcelo Carlos Bortoluzzi, Andre Guollo, Diogo L Capella, Rafael Manfro

Pain Levels after Third Molar Surgical Removal: An Evaluation of Predictive Variables

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:6] [Pages No:239 - 244]

PDF  |  DOI: 10.5005/jp-journals-10024-1041  |  Open Access |  How to cite  | 

Abstract

Aim

The aim of this prospective study was to evaluate the pain course after surgical removal of third molars.

Materials and methods

The sample consisted of 100 consecutive patients. Pain intensity was assessed by means of a visual analog scale (VAS).

Results

At day 1, moderate and severe pain were observed predominantly in patients who had surgery in the mandible (p < 0.001) and for patients younger than 24 years (p = 0.009), while more patients who weekly consumed mate tea (Ilex paraguariensis) showed pain classified as none or light (p = 0.017). At day 2, the profile of pain moderate/severe was more prevalent for patients who had surgery in the mandible (p < 0.001) with the report of difficult surgery (p = 0.042) and with odontotomy performed (p = 0.033). In the third postoperative day, severe/moderate pain was associated with surgery in the mandible (p < 0.001) and with odontotomy (p = 0.021) and ostectomy (p = 0.028) performed, with report of long and difficult procedure (p = 0.023), surgeries which last more than sixty minutes (p < 0.026), and for those patients who developed postoperative inflammatory complications (p < 0.001).

Conclusion

Higher pain complains could be expected for patients who have long and difficult mandibular third molar surgery characterized by odontotomy and ostectomy.

Clinical significance

Pain after third molar surgery is a common sequele. It is indispensable for the dentists to be apt in handling and preventing it as far as possible and know possible variables that may influence or increase these pain levels. It can be a clinical advantage. Better understanding the pain characteristics may guide the dentist through preoperative decisions.

How to cite this article

Bortoluzzi MC, Guollo A, Capella DL, Manfro R. Pain Levels after Third Molar Surgical Removal: An Evaluation of Predictive Variables. J Contemp Dent Pract 2011;12(4):239-244.

RESEARCH ARTICLE

Vijay Prasad Koganti, L Chandrashekhar, SD Srinivas, M Kiran Kumar

The Free Rotated Papilla Autograft—A Bilaminar Procedure for the Coverage of Multiple Shallow Gingival Recessions: A Biometric Evaluation

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:7] [Pages No:245 - 251]

PDF  |  DOI: 10.5005/jp-journals-10024-1042  |  Open Access |  How to cite  | 

Abstract

Materials and methods

Fifteen systemically healthy patients with multiple gingival recessions underwent the procedure the probing depth, percentage of root coverage width of keratinized gingiva, width of attached gingiva were recorded at baseline 3 and 12 months.

Results

All parameters significantly improved from baseline to 12 months. The mean probing depth 1 mm ± 0 mm at baseline which was increased to 1.175 ± 0.245 mm at the end of 3 months and remained same at 12 months. The mean gingival recession was 2.35 ± 0.516 mm at baseline which was improved to 0.425 ± 0.245 mm at the end of 3 months and remained same at 12 months. The mean width of keratinized gingiva was 1.157 ± 0.245 mm at baseline which was improved to 3.15 ± 0.489 mm at the end of 3 months and remained same at 12 months. The mean width of attached gingiva 0.175 ± 0.245 mm at baseline which was improved to 1.975 ± 0.415 mm at the end of 3 months and remained same at 12 months.

Conclusion

The mucogingival surgery resulted in achieving high degree of success and predictability as well as an excellent esthetic outcome.

Clinical significance

Free rotated papilla autograft is a predictabe treatment modality for multiple shallow gingival recessions.

How to cite this article

Koganti VP, Chandrashekhar L, Srinivas SD, Kumar MK. The Free Rotated Papilla Autograft— A Bilaminar Procedure for the Coverage of Multiple Shallow Gingival Recessions: A Biometric Evaluation. J Contemp Dent Pract 2011;12(4):245-251.

RESEARCH ARTICLE

Cintia Iara Oda Carvalhal, José Antônio Nunes de Mello, Lourenço Correr Sobrinho, Américo Bertolazzo Correr, Mário Alexandre Coelho Sinhoreti

Dimensional Change of Elastomeric Materials after Immersion in Disinfectant Solutions for Different Times

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:7] [Pages No:252 - 258]

PDF  |  DOI: 10.5005/jp-journals-10024-1043  |  Open Access |  How to cite  | 

Abstract

Aim

The aim of this study was to evaluate the influence of immersion period in two disinfectant solutions on dimensional change of four elastomeric impression materials.

Materials and methods

Four representative materials of each class of elastomers: Xantopren (polydimethylsiloxane—PDS), Express (polyvinyl siloxane—PVS); Permlastic (polysulfide— PS) and Soft Impregum (polyether—EP) were mixed according to manufacturers’ instructions and then inserted into a metal matrix prepared according to the specification of ISO 4823. The molds were removed from the matrix after 7 minutes and immersed in disinfectant solutions (sodium hypochlorite 0.5 and 2% glutaraldehyde) for 5, 10, 20, 30 and 60 minutes (n = 7), except the control group, which was not immersed. Once removed from solutions, the test samples were washed in water for 15 seconds, dried and measured three times, using a comparative optical microscope, with accuracy of 0.0005 mm. The analysis of variance with three criteria and Tukey's test with significance level of 5% showed that differences in linear dimensions of the materials analyzed were not statistically significant (p > 0.05) after soaking in sodium hypochlorite 0.5 and 2% glutaraldehyde, for the tested periods of time.

Clinical significance

Combinations of molding material and disinfecting solution can be used in the dental clinic for infection control, without changing the dimensional molds, for immersion periods not longer than 20 minutes.

How to cite this article

Carvalhal CIO, de Mello JAN, Sobrinho LC, Correr AB, Sinhoreti MAC. Dimensional Change of Elastomeric Materials after Immersion in Disinfectant Solutions for Different Times. J Contemp Dent Pract 2011;12(4): 252-258.

RESEARCH ARTICLE

Anirudh K Mathur, Vinaya S Pai, S Nandini, Anirban Sarmah

Finite Element Analysis of Dental Implant as Orthodontic Anchorage

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:6] [Pages No:259 - 264]

PDF  |  DOI: 10.5005/jp-journals-10024-1044  |  Open Access |  How to cite  | 

Abstract

Aim

The purpose of this three-dimensional (3D) finite element study was to investigate orthodontic loading simulation on a single endosseous implant and its surrounding osseous structure, to analyze the resultant stresses and to identify the changes in the bone adjacent to the implant following orthodontic loading.

Materials and methods

Two models were constructed using finite element method consisting of endosseous dental implant and the surrounding bone. In the first model, the contact between the implant and the bone was simulated showing no osseointegration, while the second model showed 100% osseointegration. Simulated horizontal loads of 20 N, at 90° from the long axis, were applied to the top of the implant. The study simulated loads in a horizontal direction, similar to a distalmesial orthodontic movement.

Results

In the first model, the stress was mainly concentrated at the neck of the implant and at the closest surrounding bone. In the second model, the stress was chiefly concentrated at the neck of the implant at the level of the cortical superficial bone. The stresses decreased in the cancellous bone area. On the implant, the highest stress concentration was at the first cervical thread decreasing uniformly to the apex. The stress distribution on the mesial and distal sides showed that the maximum compressive stress was localized mesially and the maximum tensile stress distally. If both models are compared, it can be observed that the stresses were less and more evenly distributed in model 1 (initial stability) than in model 2 when osseointegration was assumed.

Conclusion

A lack of bony support for the implant represents an unfavorable situation from biomechanical point of view that should be considered and solved. As clinical problems mostly occur at the marginal bone region (bacterial plaque accumulation, overcontoured abutments, infections, osseous defects), attention should be focused on this region.

Clinical significance

When osseointegrated implants are primarily used as anchorage for orthodontic purposes and then as fixed prosthesis, the functional and structural union of titanium to bone should be preserved.

How to cite this article

Sarmah A, Mathur AK, Gupta V, Pai VS, Nandini S. Finite Element Analysis of Dental Implant as Orthodontic Anchorage. J Contemp Dent Pract 2011;12(4):259-264.

RESEARCH ARTICLE

Carlos M Pria, Farah Masood, Joy M Beckerley, Robert E Carson

Study of the Inferior Alveolar Canal and Mental Foramen on Digital Panoramic Images

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:7] [Pages No:265 - 271]

PDF  |  DOI: 10.5005/jp-journals-10024-1045  |  Open Access |  How to cite  | 

Abstract

Objectives

To study the radiographic location of the mental foramen and appearance of the inferior alveolar canal and the relationship between image gray values and the clarity of inferior alveolar canal on the digital panoramic images and to evaluate if the histogram equalization of the digital image would improve the visualization of the inferior alveolar canal outline on the digital panoramic images in the mandible.

Methods

Five hundred digital panoramic images were evaluated by two examiners using a specific inclusion criteria. Only the right side of the mandible was studied. Chi-square analyses were used for comparisons of distributions. Mean and median pixel values were analyzed separately with a one-way analysis of variance. Also, percentages were calculated to report the usefulness of the histogram equalization for visualization of canal.

Results

Results show variation in location of mental foramen. Most frequent location of the mental foramen was reported as first and second premolar region. Chi-square analysis showed that the frequency of occurrence of the mental foramen was equally probable for any of the three locations. The study did not find significant usefulness of the gray values obtained from the histogram equalization in predicting the clarity of inferior alveolar canal outlines.

Clinical significance

Knowing the normal relationship and the anatomical variation of the maxillofacial structures for each patient is important for surgical implant treatment planning to avoid future complications. It is also important to be familiar with the advantages and limitations of diagnostic aids available before making treatment planning decisions based on such findings.

How to cite this article

Pria CM, Masood F, Beckerley JM, Carson RE. Study of the Inferior Alveolar Canal and Mental Foramen on Digital Panoramic Images. J Contemp Dent Pract 2011;12(4):265-271.

RESEARCH ARTICLE

Dheeraj Kumar, Anand U Madihalli, K Rajeev Kumar Reddy, Namrataa Rastogi, NT Pradeep

Elastomeric Impression Materials: A Comparison of Accuracy of Multiple Pours

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:7] [Pages No:272 - 278]

PDF  |  DOI: 10.5005/jp-journals-10024-1046  |  Open Access |  How to cite  | 

Abstract

Aim

The aim of the present study is to compare the various elastomeric impression materials in terms of accuracy and dimensional stability, with respect to obtaining multiple casts from a single elastomeric impression at various times of pours.

Materials and methods

Three master dies were prepared for the impression making, two of these were made of brass containing a central hole with undercuts. The third die simulated a conventionally prepared typodont maxillary central incisor. Three elastomeric impression materials were chosen for the study. Each impression was poured at various time periods. Casts thus obtained were evaluated under a traveling microscope to evaluate various dimensional changes.

Results

Addition silicones provided dies which were shorter in height and bigger in diameter. Polyethers provided dies which were shorter in both height and diameter. Condensation silicones showed insignificant changes from the master die at the immediate pour but deteriorated rapidly after that in subsequent pours.

Conclusion

None of the impression material showed a consistent behavior up to the fourth pour. They occasionally showed deviation from the pattern, but all these values were statistically insignificant. Polyethers showed lesser ability than both the addition silicones as well as the condensation silicones to recover from induced deformation.

Clinical significance

Addition silicones as well as the condensation silicones have better ability to recover from induced deformation when compared to polyether.

How to cite this article

Kumar D, Madihalli AU, Reddy KRK, Rastogi N, Pradeep NT. Elastomeric Impression Materials: A Comparison of Accuracy of Multiple Pours. J Contemp Dent Pract 2011;12(4):272-278.

RESEARCH ARTICLE

Soley Arslan, A Ruya Yazici, Jale Gorucu, Atilla Ertan, KanŞad Pala, Yakup Üstün, Sibel A Antonson, Donald E Antonson

Effects of Different Cavity Disinfectants on Shear Bond Strength of a Silorane-based Resin Composite

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:8] [Pages No:279 - 286]

PDF  |  DOI: 10.5005/jp-journals-10024-1047  |  Open Access |  How to cite  | 

Abstract

Aim

This in vitro study evaluated the effect of different cavity disinfection agents on bond strength of a silorane-based resin composite.

Materials and methods

Thirty-six caries-free human third mandibular molars sectioned in mesio-distal direction were mounted in acrylic resin with their flat dentin surfaces exposed. After the dentin surfaces were wet ground with # 600 silicon carbide paper, the teeth were randomly divided into 6 groups of 12 each according to the cavity disinfection agents; chlorhexidine (CHX); sodium hypochlorite (NaOCl), propolis, ozone, Er, Cr:YSGG laser and no treatment (control). After treatment of dentin surfaces with one of these cavity disinfection agents, Filtek Silorane adhesive system was applied. The silorane-based resin composite, Filtek Silorane was condensed into a mold and polymerized. After storage at 37°C for 24 hours, the specimens were tested in shear mode at a crosshead speed of 1.0 mm/minute. The results were analyzed by one-way ANOVA.

Results

No statistically significant difference was observed between the groups (p>0.05).

Conclusion

The use of the tested cavity disinfection agents, chlorhexidine, sodium hypochlorite, propolis, ozone and Er, Cr:YSGG laser did not significantly affect the dentin bond strength of a silorane-based resin composite, Filtek Silorane.

Clinical significance

Cavity disinfectant applications did not affect the dentin bond strength of a silorane-based resin composite.

How to cite this article

Arslan S, Yazici AR, Gorucu J, Ertan A, Pala K, Üstün Y, Antonson SA, Antonson DE. Effects of Different Cavity Disinfectants on Shear Bond Strength of a Siloranebased Resin Composite. J Contemp Dent Pract 2011;12(4): 279-286.

RESEARCH ARTICLE

D Praveen Kumar Varma, Y Narendranath Reddy, Anil G Kumar, KV Sujan Kumar, Surendra V Shetty

Effect of Thermal Recycling of Metal Brackets on Shear and Tensile Bond Strength

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:8] [Pages No:287 - 294]

PDF  |  DOI: 10.5005/jp-journals-10024-1048  |  Open Access |  How to cite  | 

Abstract

Aim

The study was undertaken to measure the changes within the mesh pad associated with reconditioning process, measure the bond strength of new and reconditioned orthodontic brackets and correlate the changes in mesh strand diameter with changes in bond strength.

Material and methods

120 clinically normal premolar teeth extracted for orthodontic reasons, were divided equally for bonding with new and recycled brackets using a no-mix type of adhesive. The mesh strand diameters of new and reconditioned brackets were evaluated with a binocular light microscope. Recycling of brackets was done using Esmadent® bracket and band reconditioner.

Results

The mesh strand diameter, tensile and shear bond strength of new and reconditioned brackets were evaluated statistically and the latter was found to show a significant reduction (p< 0.0001). However, the bond strength values of the reconditioned brackets were found to be well above the clinically required minimum.

Conclusion

Reduction in mesh strand diameter, as a result of reconditioning process, does not correlate with the change in bond strength between initial and recycled bondings.

Clinical significance

The bond strength of reconditioned brackets is adequate enough to resist the magnitude of forces generated in the mouth, throughout the duration of orthodontic treatment for successful treatment results.

How to cite this article

Reddy YN, Varma DPK, Kumar AG, Kumar KVS, Shetty SV. Effect of Thermal Recycling of Metal Brackets on Shear and Tensile Bond Strength. J Contemp Dent Pract 2011;12(4):287-294.

RESEARCH ARTICLE

Shalini Gupta, Arvind Agarwal, Brijesh Ruparelia, Ajay Kubawat, Sandeep Patel

Modified Gap Arthroplasty and Myrhaug's Incision as a Treatment Option in Management of Temporomandibular Joint Ankylosis: A Study of 10 Cases

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:6] [Pages No:295 - 300]

PDF  |  DOI: 10.5005/jp-journals-10024-1049  |  Open Access |  How to cite  | 

Abstract

Purpose of the study

The purpose of this study was to evaluate effectiveness of modified gap arthroplasty procedure and modified Myrhaug's preauricular incision for treating bony temporomandibular joint (TMJ) ankylosis.

Materials and methods

A total of 10 cases were included in the study with Sawhney's type III and IV TMJ ankylosis. Study consisted of 6 males and 4 females. Three cases were treated for bilateral ankylosis and 7 were treated for unilateral ankylosis. All the patients were treated with modified gap arthroplasty and modified Myrhaug's incision was used. In this modification, osteotomy cuts were modified in such a way that coronoid process was also removed simultaneously along with the osteotomized ankylosed mass in one piece.

Results

All the patients were followed up for 5 years and none of them presented with recurrence. Two patients had transient paresis to zygomatic and temporal branch of facial nerve and none had permanent damage to the nerve. Seven patients had mouth opening more than 25 mm (p) when followed for 5 years. Anterior open bite was seen in 4 patients and deviation of the jaw on ipsilateral side was noted in 2 patients.

Conclusion

Modified gap arthroplasty gave successful results in the follow-up period and eliminated the need of separate coronoidectomy. Use of modified Myrhaug's preauricular approach, provided excellent visibility particularly of the elongated coronoid process, minimized bleeding, prevented damage to the vital anatomical structures surrounding the joint and gave acceptable cosmetic results.

Clinical significance

The modified incision has been found to be reducing intra- and postoperative morbidity as well as provides excellent accessibility. The modified osteotomy technique eliminated the need for separate coronoidectomy thus significantly reducing the operating time.

How to cite this article

Agarwal A, Ruparelia B, Kubawat A, Patel S, Gupta S. Modified Gap Arthroplasty and Myrhaug's Incision as a Treatment Option in Management of Temporomandibular Joint Ankylosis: A Study of 10 Cases. J Contemp Dent Pract 2011;12(4):295-300.

RESEARCH ARTICLE

Hamid Jafarzadeh, Christopher I Udoye

Pain during Root Canal Treatment: An Investigation of Patient Modifying Factors

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:4] [Pages No:301 - 304]

PDF  |  DOI: 10.5005/jp-journals-10024-1050  |  Open Access |  How to cite  | 

Abstract

Aim

The study highlighted the effect of patient-related factors on levels of pain felt by subjects during root canal treatment, as well as the association between treatment duration and pain severity.

Materials and methods

Maxillary central incisors with either necrotic pulp or irreversibly inflamed pulp, with or without preoperative pain were studied in 160 subjects aged 18 years and above. Subject's age and gender as well as pulp status and preoperative pain status were recorded. The procedure was done using a standard protocol. Visual analog scale was used to record the level of pain felt.

Results

Those cases with irreversible pulpitis felt higher pain. None with necrotic pulp experienced intense pain, while those in the 51 to 60 year age bands had severe, unbearable or intense pain. Mild pain was a common denominator in all age bands. Pain level increased with treatment duration.

Conclusion

Except for age, the level of pain felt by subjects during RCT is significantly correlated with gender and pulp status. Furthermore, the experienced pain levels increased with treatment duration.

Clinical significance

Clinicians should be prepared to make use of supplemental local anesthesia in women and in teeth with IP. All treatment must be accomplished within reasonable time period.

How to cite this article

Udoye CI, Jafarzadeh H. Pain during Root Canal Treatment: An Investigation of Patient Modifying Factors. J Contemp Dent Pract 2011;12(4):301-304.

RESEARCH ARTICLE

Sathish Abraham, LM Ranganath, Ravindra Ganguly Keshav Shet, AG Rajesh

The Effect of Fiber Reinforcement on the Dimensional Changes of Poly Methyl Methacrylate Resin after Processing and after Immersion in Water: An in vitro Study

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:13] [Pages No:305 - 317]

PDF  |  DOI: 10.5005/jp-journals-10024-1051  |  Open Access |  How to cite  | 

Abstract

Aims and objectives

To evaluate and compare the effect of fiber reinforcement on the dimensional changes of heat-cured poly (methyl methacrylate) resin after processing and immersion in water.

Materials and methods

Three different heat-cure resins were selected for the present study: (1) Nonreinforced heat-cure methyl methacrylate resin, (2) High Impact heat-cured methyl methacrylate resin and (3) Fiberglass reinforced methyl methacrylate resin. Ninety samples were prepared using three different resins and denture bases obtained for the same. The amount of space between the tissue surface and the cast in the anterior, middle and posterior regions is measured after processing and immersion in water for 17 days using a traveling microscope having a least count of 0.001 cm.

Results

Mean and standard deviation were calculated for the dimensional changes and were subjected to statistical analysis (Student t-test, unpaired). Among the three groups of resins, fiber reinforced heat-cured methyl methacrylate resin was found to be statistically highly significant in terms of dimensional changes when compared with the nonreinforced and high impact heat-cured resins.

Conclusion

Dimensional changes were evident in all the planes in the three groups studied and were in the following decreasing order—fiberglass reinforced heat-cured poly (methyl methacrylate) resin, high impact heat-cured poly (methyl methacrylate) resin and nonreinforced heat-cured poly (methyl methacrylate) resin.

Clinical significance

The fibers are added in order to increase the strength of acrylic resin. Considering only the strength may in turn affect the dimensional accuracy of the acrylic resin resulting in loss of retention and stability, affecting the fit of the denture.

How to cite this article

Ranganath LM, Shet RGK, AG Rajesh, Abraham S. The Effect of Fiber Reinforcement on the Dimensional Changes of Poly Methyl Methacrylate Resin after Processing and after Immersion in Water: An in vitro Study. J Contemp Dent Pract 2011;12(4):305-317.

RESEARCH ARTICLE

Chirag Taluja, Nimisha Shah, Hardik Joshi

Root Canal Morphology and Variations of Mandibular Premolars by Clearing Technique: An in vitro Study

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:4] [Pages No:318 - 321]

PDF  |  DOI: 10.5005/jp-journals-10024-1052  |  Open Access |  How to cite  | 

Abstract

Background and objectives

The aim of this study was to compare internal anatomy between first and second mandibular premolars and to study different percentage variations of root canal morphology of mandibular premolars in Gujarat population based on Vertucci's classification by clearing technique.

Methodology

A total of 80 extracted intact permanent mandibular premolars (40 each mandibular first premolar and mandibular second premolar) with fully formed apices were collected. Access cavity was prepared with endo access kit, all samples were placed in 2.5% sodium hypochlorite for 48 hours, after that all samples were washed in running water for 2 hours. After washing, all samples were transferred to 5% nitric acid, for decalcification, for 72 hours, with the acid being changed every 24 hours and stirred once every 8 hours. All samples were washed in running water and dehydrated using ascending grades (70%, 80%, 90% and 100%) of isopropyl alcohol for 2 days. Finally, they were rendered transparent by immersion in methyl salicylate for 15 minutes and then India ink dye was injected into the access cavity. The anatomy of the root canal was observed and classified based on the Vertucci's classification.

Statistical analysis

Parametric Z-test was used to compare the variation between mandibular first and second premolars.

Results

In mandibular first premolar, type 1 was found in 20%, type 2 was 5%, type 3 was 5%, type 4 was 25%, type 5 was 12.5% and type 6 was 2.5% of total samples. Whereas, in mandibular second premolar, type 1 was found in 80% out of all samples, type 4 was 2.5%, type 5 was 17.5%. Type 2, type 3, type 6, type 7 and type 8 were not found in this study.

Conclusion

Mandibular first premolar showed higher variation (75%) compared to mandibular second premolar (37.5%).

Clinical significance

The knowledge of variations in the root canal morphology of the mandibular premolars can enhance the level of endodontic treatment of mandibular premolars.

How to cite this article

Parekh V, Shah N, Joshi H. Root Canal Morphology and Variations of Mandibular Premolars by Clearing Technique: An in vitro Study. J Contemp Dent Pract 2011;12(4):318-321.

CASE REPORT

Indra Gupta, Satyendra Gupta, Kishore Sonwane, Dilip Damankar

Management of Maxillary Avulsed Teeth: Using Lasers for Canal Sterilization

[Year:2011] [Month:July-August] [Volume:12] [Number:4] [Pages:5] [Pages No:322 - 326]

PDF  |  DOI: 10.5005/jp-journals-10024-1053  |  Open Access |  How to cite  | 

Abstract

Background

Avulsion or exarticulation accounts for up to 16% of all traumatic injuries. It is most common in age group of 7 to 14 years. Following the loss of anterior teeth, the replacement is necessary to maintain esthetics, phonetics and avoid arch length discrepancy. Following replantation, postoperative care and management is done in several ways.

Case report

This article reports replantation and use of laser for endodontic sterilization and healing in a 12-year-old boy.

Conclusion

It is suggested that replantation of an avulsed tooth as soon as possible using appropriate splint and regular followup will show good prognosis.

Clinical significance

Laser offers itself as a good alternative to Ca(OH)2 for root canal sterilization and improved periapical healing.

How to cite this article

Gupta I, Gupta S, Sonwane K, Damankar D. Management of Maxillary Avulsed Teeth: Using Lasers for Canal Sterilization. J Contemp Dent Pract 2011;12(4):322-326.

© Jaypee Brothers Medical Publishers (P) LTD.