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VOLUME 20 , ISSUE 8 ( August, 2019 ) > List of Articles


Assessing the Accuracy of Low-cost Surgical Guides Generated Using Ridge Mapping by Means of Cone Beam Computerized Tomography

Sameep Singh

Keywords : Cone beam computerized tomography, Flapless surgery, Guided surgery, Ridge mapping, Surgical guide

Citation Information : Singh S. Assessing the Accuracy of Low-cost Surgical Guides Generated Using Ridge Mapping by Means of Cone Beam Computerized Tomography. J Contemp Dent Pract 2019; 20 (8):907-914.

DOI: 10.5005/jp-journals-10024-2627

License: CC BY-NC 4.0

Published Online: 01-12-2019

Copyright Statement:  Copyright © 2019; The Author(s).


Aim: Assessing the accuracy of surgical guides generated with the help of a simple chair side ridge mapping technique by comparing the planned implant position with the achieved implant position on post-op computerized tomography scans. Materials and methods: In this study, 20 implant sites in patients were selected. Ridge mapping was done through a vacuum press template at three buccal (B1, B2, B3), three lingual (L1, L2, L3), and one crestal (C) points for each implant site. Readings were transferred onto the cast, and surgical guides were fabricated for implant placement. Postoperative cone beam computerized tomography (CBCT) was done to assess planned and achieved implant position. Comparison was done between soft tissue depths and implant distance from the crest of alveolar bone determined by the ridge mapping technique with measurements done on CBCT. The points used for ridge mapping were used as the reference for measurements. The data were analyzed using paired t test. p < 0.05 was considered to be statistically significant. Results: On comparing the mean values of soft tissue depths from the ridge mapping and CBCT data, insignificant differences were found at B1, B2, L1, L2, L3, and C, but significant differences were found at B3. On comparing the implant distances from alveolar bone from both the data, insignificant differences were found at B, B2, B3, L1, L2, and L3 and significant difference was found at the crest in the mean values. Conclusion: Under the limitations of the above study, it can be concluded that a simple chairside procedure like ridge mapping can be used as an effective way for guided implant placement in sufficient available alveolar bone.

  1. Stumpel LJ III. Cast-based guided implant placement: a novel technique. J Prosthet Dent 2008;100:61–69. DOI: 10.1016/S0022-3913(08)60140-7.
  2. Nikolidakis D, Sykaras N. Removal of a malpositioned implant and immediate reimplantation during healing period. Dent Oral Craniofac Res 2017;4(3):1–4. DOI: 10.15761/DOCR.1000248.
  3. Dave BH, Sutaria S, et al. A comparative study of three different methods for evaluating width of alveolar ridge prior to implant placement: An in vivo study. Int J Oral Care Res 2017;5(1):1–8. DOI: 10.5005/jp-journals-10051-0082.
  4. Colombo M, Mangano C, et al. Clinical applications and effectiveness of guided implant surgery: a critical review based on randomized controlled trials. BMC Oral Health 2017;17:150. DOI: 10.1186/s12903-017-0441-y.
  5. Pierce DA, Preston DL. Radiation-related cancer risks at low doses among atomic bomb survivors. Radiat Res 2000;154(2):178–186. DOI: 10.1667/0033-7587(2000)154[0178:RRCRAL]2.0.CO;2.
  6. Preston DL, Ron E, et al. Solid cancer incidence in atomic bomb survivors: 1958–1998. Radiat Res 2007;168(1):1–64. DOI: 10.1667/RR0763.1.
  7. Preston DL, Pierce DA, et al. Dose response and temporal patterns of radiation-associated solid cancer risks. Health Phys 2003;85(1):43–46. DOI: 10.1097/00004032-200307000-00010.
  8. Kassebaum DK, Nummikoski PV, et al. Cross sectional radiography for implant site assessment. Oral Surg Oral Med Oral Pathol 1990;70: 674–678. DOI: 10.1016/0030-4220(90)90421-N.
  9. Jaju PP, Jaju SP. Clinical utility of dental cone-beam computed tomography: current perspectives. Clin Cosmet Investig Dent 2014;6:29–43. DOI: 10.2147/CCIDE.S41621.
  10. D'Haese J, Ackhurst J, et al. Current state of the art of computer-guided implant surgery. Periodontol 2000 2017;73:121–133. DOI: 10.1111/prd.12175.
  11. Van Assche N, van Steenberghe D, et al. Accuracy of implant placement based on presurgical planning of three-dimensional cone beam images: a pilot study. J Clin Periodontal 2007;34:816–821. DOI: 10.1111/j.1600-051X.2007.01110.x.
  12. Perez LA, Brooks SL, et al. Comparison of linear tomography and direct ridge mapping for the determination of edentulous ridge dimensions in human cadavers. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2005;99:748–754. DOI: 10.1016/j.tripleo.2004.10.023.
  13. Chen LC, Lundgren T, et al. Comparison of different methods of assessing alveolar ridge dimensions prior to dental implant placement. J Priodontal 2008;79:401–405. DOI: 10.1902/jop.2008.070021.
  14. Reyes A, Turkyilmaz I, et al. Accuracy of surgical guides made from conventional and a combination of digital scanning and rapid prototyping techniques. J Prosthet Dent 2015;113(4):295–303. DOI: 10.1016/j.prosdent.2014.09.018.
  15. Burns DR, Crabtree DG, et al. Template for positioning and angulation of intraosseous implants. J Prosthet Dent 1988;60:479–483. DOI: 10.1016/0022-3913(88)90253-3.
  16. Stumpel L. Cast based guided implant placement; a novel technique. J Prosthet Dent 2008;100:61–69. DOI: 10.1016/S0022-3913(08) 60140-7.
  17. Park C, Raigrodski AJ, et al. Accuracy of implant placement using precision surgical guides with varying occlusogingival heights: An in vitro study. J Prosthet Dent 2009;101:372–381. DOI: 10.1016/S0022-3913(09)60080-9.
  18. Pesun IJ, Gardner FM. Fabrication of a guide for radiographic evaluation and surgical placements of implants. J Prosthet Dent 1995;73:548–552. DOI: 10.1016/S0022-3913(05)80114-3.
  19. Sicilia A, Enrile FJ, et al. Evaluation of the precision obtained with a fixed surgical template in the placement of implants for rehabilitation of the completely edentulous maxilla: a clinical report. Int J Oral Maxillofac Implants 2000;15:272–277.
  20. Fajardo RJ, Ryan TM, et al. Assessing the accuracy of high-resolution X-ray computed tomography of primate trabecular bone by comparisons with histological sections. Am J Phys Anthropol 2002 May;118(1):1–10. DOI: 10.1002/ajpa.10086.
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