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JAYPEE JOURNALS
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1.  CLINICAL TECHNIQUE
Pre-endodontic Post and Core Technique for Endodontic and Prosthodontic Treatment
Keita Sasaki, Takatsugu Yamamoto, Tomoko Ikawa, Yuko Shigeta, Shuji Shigemoto, Eriko Ando,Takumi Ogawa, Keisuke Ihara
[Year:2018] [Month:January] [Volume:19 ] [Number:1] [Pages:122] [Pages No:117-122] [No of Hits : 1529]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10024-2223 | FREE

ABSTRACT

Introduction: Displacement of provisional fixed prostheses may result in undesirable and embarrassing outcomes in dental treatments, especially in endodontic treatment. Development of certain counter measures has been necessary to avoid such discomforts.

Aim: The aim of this report was to propose a pre-endodontic post and core technique to achieve smooth progress of the treatment.

Materials and methods: The patient was a 59-year-old male diagnosed with an infraocclusion caused by wear of his teeth. He received full mouth provisional fixed restorations for a complete oral rehabilitation. Displacement and fracture of the restorations frequently occurred during the observation period for the function of the restorations. Therefore, the pre-endodontic post and core technique was applied to the abutment teeth before their endodontic treatments were started. The technique consisted of three steps as follows: Step 1: Caries removal and dowel preparation were performed for the abutment teeth having apical periodontitis. Composite cores were indirectly fabricated, which had access holes for endodontic treatment. Step 2: The cores were bonded to the teeth. In endodontic treatment, rubber dam appliances were easily placed owing to the core, and proper tooth isolation was accomplished. Step 3: Fiberposts were bonded to the dowel holes through the access holes after the root canal filling. During endodontic treatment, displacement and/or fracture of the provisional restorations did not occur.

Conclusion: The pre-endodontic post and core technique was effective in obtaining improved retention of provisional restoration, appropriate isolation for endodontic treatment, and sufficient retention of the post and core.

Clinical significance: The pre-endodontic post and core technique is useful for avoiding the discomforts in dental treatments, namely, a smooth transition from endodontic to prosthodontic treatment can be achieved.

Keywords: Composites, Dental prosthesis, Post and core, Root canal treatment, Rubber dam.

How to cite this article: Sasaki K, Yamamoto T, Ikawa T, Shigeta Y, Shigemoto S, Ando E, Ogawa T, Ihara K. Pre-endodontic Post and Core Technique for Endodontic and Prosthodontic Treatment. J Contemp Dent Pract 2018;19(1):117-122.

Source of support: Nil

Conflict of interest: None

 
2.  ORIGINAL RESEARCH
Diametral Tensile Strength, Flexural Strength, and Surface Microhardness of Bioactive Bulk Fill Restorative
Ali Alrahlah
[Year:2018] [Month:January] [Volume:19 ] [Number:1] [Pages:122] [Pages No:13-19] [No of Hits : 1170]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10024-2205 | FREE

ABSTRACT

Aim: The aim was to perform comparative analysis of bioactive, contemporary bulk-fill resin-based composites (RBCs) and conventional glass-ionomer materials for flexural strength (FS), diametral tensile strength (DTS), and Vickers hardness number (VHN) in the presence of thermocycling.

Materials and methods: Five restorative materials [Tetric N-Ceram Bulk Fill; smart dentin replacement (SDR) Flowable Material; Bioactive restorative material (ACTIVA Bulk Fill); Ketac Universal Aplicap; and GC Fuji II] were evaluated for DTS, FS, and VHN. Half the samples in each material group were thermocycled. The DTS was performed under compressive load at a cross-head speed of 1.0 mm/min. The FS was assessed by three-point bending test at a cross-head speed of 0.5 mm/min. The VHN was determined using a Vickers diamond indenter at 50 gf load for 15 seconds. Differences in FS, DTS, and VHN were analyzed using analysis of variance (ANOVA) and Tukey post hoc tests at α = 0.05 level of significance.

Results: N-Ceram, ACTIVA, and SDR demonstrated the highest and comparable (p > 0.05) FS. The SDR had the highest DTS value (141.28 ± 0.94), followed by N-Ceram (136.61 ± 1.56) and ACTIVA (129.05 ± 1.78). Ketac had the highest VHN value before and after thermocycling.

Conclusion: ACTIVA showed mechanical properties (FS and DTS) comparable with bulk-fill resin composite materials. ACTIVA showed potential for durability, as VHN was comparable post-thermocycling.

Clinical significance: Bioactive materials showed acceptable DTS and FS values. However, hardness was compromised compared with included materials. ACTIVA Bulk Fill shows potential for dentin replacement but it needs to be covered with a surface-resistant restorative material. Further studies to improve surface characteristics of ACTIVA Bulk Fill are recommended.

Keywords: Bioactive, Bulk fill, Mechanical properties, Resin composite, Thermocycling.

How to cite this article: Alrahlah A. Diametral Tensile Strength, Flexural Strength, and Surface Microhardness of Bioactive Bulk Fill Restorative. J Contemp Dent Pract 2018;19(1):13-19.

Source of support: Nil

Conflict of interest: Noen

 
3.  REVIEW ARTICLE
Extraction Planning in Orthodontics
Mustafa Harith Al-Ani, Adil Osman Mageet
[Year:2018] [Month:May] [Volume:19 ] [Number:5] [Pages:152] [Pages No:619-623] [No of Hits : 1106]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10024-2307 | FREE

ABSTRACT

Introduction: Planning extraction of teeth for orthodontic treatment is one of the challenging factors for successful functional and esthetic orthodontic results and for the longterm stability.

Aim: The aim of this study is to document possible extraction guidelines for planning of orthodontic treatment for space deficiency cases related to excess tooth material.

Results: The guidelines are written as patterns to facilitate the decision of extraction of teeth for class I, class II division 1, class II division 2, and class III malocclusions, for crowding, overjet reduction, or correcting the buccal segment relationship. The decision for extraction of teeth for orthodontic treatment is enforced by the oral hygiene, carious teeth, periodontal involvement, impacted teeth, supernumeraries, hypodontia, or for orthognathic purposes. Also, planning the decision for accurate extraction pattern is the main factor in the success of the orthodontic treatment and for the long-term stability of the results.

Conclusion: Orthodontic tooth extraction should always be planned with consideration of the width and length of the face, the oral hygiene, carious activity, periodontal involvement, malformed crowns, length and health of the root of the teeth, prognosis of impacted teeth, supernumeraries, and hypodontia.

Clinical significance: Accurate diagnosis and treatment planning following orthodontic extraction guidelines lead to a longterm stability of the corrected results.

Keywords: Crowding, Extraction of teeth, Hypodontia, Longterm stability, Supernumerary.

How to cite this article: Al-Ani MH, Mageet AO. Extraction Planning in Orthodontics. J Contemp Dent Pract 2018;19(5):619-623.

Source of support: Nil

Conflict of interest: None

 
4.  ORIGINAL RESEARCH
Comparison between Fluoride and Nano-hydroxyapatite in Remineralizing Initial Enamel Lesion: An in vitro Study.
Issa Daas, Sherine Badr, Essam Osman
[Year:2018] [Month:March] [Volume:19 ] [Number:3] [Pages:108] [Pages No:306-312] [No of Hits : 775]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10024-2258 | FREE

ABSTRACT

Aim: The aim of this study was to compare the effectiveness of nano-hydroxyapatite (nano-HAP) paste and fluoride varnish in remineralizing initial enamel lesion in young permanent teeth and their ability to resist secondary caries under dynamic pH cycling quantitatively and qualitatively.

Materials and methods: Initial caries-like lesions were artificially developed on 45 specimens. Specimens were divided into three groups: (1) Control (without treatment), (2) fluoride varnish (3M ESPE), and (3) nano-HAP paste (Desensibilize Nano P). The nano-HAP paste was applied twice separated by one pH cycle, and the varnish was applied only once followed by 7 days of pH cycling. All specimens were examined using DIAGNOdent® pen (KaVo, Germany), and a representative specimen was randomly selected from each group for qualitative evaluation using scanning electron microscope (SEM) at four stages: Baseline, after lesion formation, immediately after remineralization, and after pH cycling. Data were statistically analyzed with Statistical Package for the Social Sciences (SPSS), version 20.

Results: The degree of demineralization was significantly elevated in control group; however, no significant difference was found between fluoride varnish group and nano-HAP paste group (p < 0.001).

Conclusion: Nano-HAP paste showed promising long-term protective effect in terms of surface depositions and maintaining a smooth surface compared with fluoride varnish.

Clinical significance: Based on the findings of this study, nano- HAP paste might be recommended as alternative remineralizing agent with lower fluoride concentration than fluoride varnish that could be beneficial for children, pregnant females, and those who are at high risk of dental fluorosis.

Keywords: Enamel lesion, Nano-hydroxyapatite, Remineralization.

How to cite this article: Daas I, Badr S, Osman E. Comparison between Fluoride and Nano-hydroxyapatite in Remineralizing Initial Enamel Lesion: An in vitro Study. J Contemp Dent Pract 2018;19(3):306-312.

Source of support: Nil

Conflict of interest: None

 
5.  EDITORIAL
Probiotics in Caries Prevention
V Naveen Kumar, Madhuram Krishnamurthy, Saravanan Poorni, Shankargouda Patil, A Thirumal Raj
[Year:2018] [Month:February] [Volume:19 ] [Number:2] [Pages:122] [Pages No:123-124] [No of Hits : 741]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10024-2224 | FREE

ABSTRACT

Past few decades have seen a significant increase in the prevalence of dental caries at a global scale. To reduce the pervasiveness of cariogenic microflora, various efforts have been undertaken. However, completely eradicating caries-associated microorganisms has been futile.1 Endogenous bacteria, such as Lactobacillus species, Streptococcus mutans, and Streptococcus sobrinus persisting in biofilms ferment carbohydrate and produce weak organic acids as by-products.

How to cite this article: Kumar VN, Krishnamurthy M, Poorni S, Patil S, Raj AT. Probiotics in Caries Prevention. J Contemp Dent Pract 2018;19(2):123-124.

Source of support: Nil

Conflict of interest: None

 
6.  ORIGINAL RESEARCH
Effect of Topical Honey on Mandibular Bone Defect Healing in Rats
Farhad Hajizadeh, Bahman Derakhshan, Ali Peimani, Zahra Abbasi
[Year:2018] [Month:January] [Volume:19 ] [Number:1] [Pages:122] [Pages No:47-51] [No of Hits : 711]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10024-2210 | FREE

ABSTRACT

Aim: In medicine, honey is known for its various biological or pharmacological effects, from wound dressing to anticancerogenic and from anti-inflammatory to antibacterial activities. The aim of the current study was to evaluate the effect of honey on healing of mandibular bone defects in a rat model.

Materials and methods: This animal study was performed on 24 wild-type Wistar rats. Following shaving, disinfection, and extraoral incision, a 2 × 2 mm defect was created at mandibular angle. In the experimental group, the defect was filled with sterile honey, while it was left unfilled in the control group. The rats were sacrificed after 2 and 4 weeks and defects were assessed histologically. The results were compared using Mann.Whitney U-test (α = 0.05).

Results: After 2 weeks, five samples of the experimental group were in mineralization phase, while all samples of the control group were in the vascularization phase (p = 0.015). After 4 weeks, the defects were filled in four samples of the experimental group, while all samples of the control group were in the mineralization stage (p = 0.002). Histomorphometric assessment revealed that the mean new bone formation in the experimental group was significantly more than the control group, both after 2 and 4 weeks (p = 0.041).

Conclusion: The results showed that honey could accentuate bone healing of mandibular small defects in rats.

Clinical significance: Honey might have potential in repair of human alveolar bone defects.

Keywords: Bone regeneration, Honey, Mandible.

How to cite this article: Hajizadeh F, Derakhshan B, Peimani A, Abbasi Z. Effect of Topical Honey on Mandibular Bone Defect Healing in Rats. J Contemp Dent Pract 2018;19(1):47-51.

Source of support: Nil

Conflict of Interest: None

 
7.  ORIGINAL RESEARCH
Antifungal Activity of Xylitol against Candida albicans: An in vitro Study
Zahra Talattof, Azita Azad, Maryam Zahed, Nazanin Shahradnia
[Year:2018] [Month:February] [Volume:19 ] [Number:2] [Pages:122] [Pages No:125-129] [No of Hits : 659]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10024-2225 | FREE

ABSTRACT

Aim: The most common fungal infection among human population is candidiasis, the etiology of which is mostly Candida albicans. As a result of a disrupted balance of the normal flora or a compromised immune system, Candida species can become pathogenic. Various in vitro surveys have shown that glucose intake is a promoter of C. albicans growth, whereas in vivo studies have found that xylitol can decrease the risk of candidiasis and angular cheilitis. Hence, we aimed to evaluate for the first time the inhibitory effects of xylitol on C. albicans by assessing its minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC).

Materials and methods: The standard strain of C. albicans was acquired. The fungi were incubated in supplemented brain.heart infusion broth for 48 hours at 37°C. The MIC was measured according to the Clinical and Laboratory Standards Institute (CLSI) M100-S24 standard. Microdilution method was applied using 360-μL sterilized polystyrene flat-bottomed 96-well plates. The antimicrobial effects were examined by the microbroth dilution method according to the CLSI M100-S24 standard.

Results: The MIC of xylitol for C. albicans was found to be 20 × 104 μg/mL. Furthermore, the concentration of 40 × 104 μg/mL with a decrease of 99.95% in the colony-forming units (CFUs) of the microorganism was found to be the MFC of xylitol for C. albicans.

Conclusion: According to the results of this survey, xylitol has considerable antimicrobial effects. Hence, this substance can be used as an effective element in gums, toothpastes, and antimicrobial mouthwashes, especially in patients with candidiasis.

Clinical significance: By knowing the MIC and MFC of xylitol, this substance can be effectively used in products aimed to cure this fungal infection.

Keywords: Candida albicans, Minimum fungicidal concentration, Minimum inhibitory concentration, Xylitol.

How to cite this article: Talattof Z, Azad A, Zahed M, Shahradnia N. Antifungal Activity of Xylitol against Candida albicans: An in vitro Study. J Contemp Dent Pract 2018;19(2):125-129.

Source of support: The authors thank the Vice-Chancellery of Shiraz University of Medical Sciences for supporting this research (Grant #8794114).

Conflict of interest: None

 
8.  ORIGINAL RESEARCH
Fracture Strength of Posterior Crowns made of Adoro and Gradia Fiber-reinforced Composites
Hosseinali Mahgoli, Mahnaz Arshad, Mehdi Saeedirad, Mohammad H Mahgoli
[Year:2018] [Month:April] [Volume:19 ] [Number:4] [Pages:117] [Pages No:393-397] [No of Hits : 632]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10024-2272 | FREE

ABSTRACT

Aim: The aim of this study was to assess the fracture strength of posterior crowns made of Adoro and Gradia fiber-reinforced composites (FRCs).

Materials and methods: In this in vitro, experimental study, extracted sound 37 maxillary first and second premolars were selected. A celluloid index was taken from teeth and the teeth received crown preparation. Impressions were made and poured. Composite crowns were fabricated of Adoro and Gradia composite resins. After curing, the teeth were immersed in distilled water for 24 hours and thermal cycled for 6,000 cycles between 5 and 55°C. Load was applied at a crosshead speed of 1 mm/minute and the fracture strength was measured. Specimens were inspected under a stereomicroscope to determine the mode of failure.

Results: The fracture strength was 1,631.77 N for Gradia and 1,569.84 N for Adoro. The difference between the fracture strength of the two groups was not significant (p > 0.05). The mode of failure was cohesive in composite in 7 specimens and adhesive between composite and fiber in 12 specimens in the Gradia group. In the Adoro group, the mode of failure was cohesive within composite in 11 specimens and adhesive between composite and fiber in 7 specimens. Complete tear of fiber did not occur in any group.

Conclusion: The fracture strength of Gradia and Adoro composites is not significantly different.

Clinical significance: Cohesive fracture within the fiber did not occur in any case in our study and the mode of failure was adhesive at the fiber-composite interface or cohesive within the composite in most specimens.

Keywords: Composite resin, Crown, Gradia, Laboratory.

How to cite this article: Mahgoli H, Arshad M, Saeedirad M, Mahgoli MH. Fracture Strength of Posterior Crowns made of Adoro and Gradia Fiber-reinforced Composites. J Contemp Dent Pract 2018;19(4):393-397.

Source of support: Nil

Conflict of interest: None

 
9.  REVIEW ARTICLE
Parental Presence/Absence in the Dental Operatory as a Behavior Management Technique: A Review and Modified View
Hicham Riba, Asma Al-Shahrani, Hayat Al-Ghutaimel, Adel Al-Otaibi, Salim Al-Kahtani
[Year:2018] [Month:February] [Volume:19 ] [Number:2] [Pages:122] [Pages No:237-241] [No of Hits : 614]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10024-2243 | FREE

ABSTRACT

Introduction: Parental presence/absence in the dental operatory (also called: Parent-in-parent-out technique) is an extremely controversial aspect of the nonpharmacological BMTs. Historically, dentists used to exclude parents from dental operatory to avoid their interference with the dentist’s aptitude to build a rapport and relationship with the child, hence increasing the child management problems by disrupting treatment and making the dentist unfocused and uncomfortable.

Aim: The purpose of this article is to review and emphasize on the importance of parental presence/absence in the dental operatory, especially in a certain age group, as a behavior management technique (BMT) in pediatric dentistry, and to present a modified view of this technique.

Results: This article reviews the current literature concerning behavior management in pediatric dentistry. It includes a medline database search and review of the comprehensive textbooks in pediatric dentistry. Some recommendations were based on the opinions of experienced researchers and clinicians.

Conclusion: Parent-in-parent-out technique in dental operatory is advocated to gain emotional support and avoid the effect of traumatic separation, especially in younger children or special health-care needs patients.

Clinical significance: The parent-in-parent-out technique in dental operatory is underused, or misused. This article clarifies the proper use of this technique along with a minor modification to it to make it more effective on young apprehensive dental patients.

Keywords: Behavior management, Dental operatory, Parental absence, Parental presence, Pediatric dentistry.

How to cite this article: Riba H, Al-Shahrani A, Al-Ghutaimel H, Al-Otaibi A, Al-Kahtani S. Parental Presence/Absence in the Dental Operatory as a Behavior Management Technique: A Review and Modified View. J Contemp Dent Pract 2018;19(2):237-241

Source of support: Nil

Conflict of interest: None

 
10.  ORIGINAL RESEARCH
Assessment of Retention and Resistance Form of Tooth Preparations for All Ceramic Restorations using Digital Imaging Technique
Alex M Muruppel, Joyce Thomas, Sudeep Saratchandran, Dinesh Nair, Sheeba Gladstone, Milen M Rajeev
[Year:2018] [Month:February] [Volume:19 ] [Number:2] [Pages:122] [Pages No:143-149] [No of Hits : 597]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10024-2228 | FREE

ABSTRACT

Aim: This in vitro study evaluated the resistance form of die preparations for all ceramic restorations and, thereby, explored the concept of effective taper and its correlation between the ideal in theory and actual in the clinical situation by analyzing the digital images of the die preparations.

Materials and methods: Scanned digital images of 114 die preparations for all ceramic restorations (n = 114) were collected from a dental laboratory. All the images were also analyzed digitally using Adobe Photoshop® software to analyze the degree of taper (angle of convergence) of each preparation and then applied the Zuckerman’s circle, and the Lewis perpendicular methods were used to measure the resistance form.

Results: For the current study, the overall average degree of taper was found to be 20.9° (range, 2-80°), which is more than what is recommended by most previous studies and also sharply greater than the textbook ideal of 3 to 6°. Mean degree of taper for maxillary was 17.56° (anterior—10.50°, posterior—23.7°), and for mandibular teeth, it was 25.22° (anterior—15°, posterior— 28.45°). Out of the 64 analyzed images of maxillary teeth, 61 presented resistance form, while 3 were without it. Out of the 50 mandibular teeth analyzed, 38 possessed resistance form, whereas 12 were without. All the anterior teeth showed resistance form irrespective of the arch.

Conclusion: The degree of taper showed a significant relationship with resistance and retention form, which was inversely proportional to each other. The recommended “degree of taper” is not always the clinically achievable as advocated in textbooks, as it is modified by various factors in the actual clinical situation.

Clinical significance: The study provides scientific background regarding the relationship between the degree of taper with resistance and retention form, and the relationship was found to be inversely proportional to each other. The recommended “degree of taper” is not always the clinically achievable as advocated in textbooks, and it is modified by various modifying or limiting factors in the actual clinical situation.

Keywords: All ceramic, Degree of taper, Resistance form, Retention form, Tooth preparations.

How to cite this article: Muruppel AM, Thomas J, Saratchandran S, Nair D, Gladstone S, Rajeev MM. Assessment of Retention and Resistance Form of Tooth Preparations for All Ceramic Restorations using Digital Imaging Technique. J Contemp Dent Pract 2018;19(2):143-149.

Source of support: Nil

Conflict of interest: None

 
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