Characterization of Mandibular First Molar Extraction Space for Dental Implant Placement Using CBCT Imaging – A Retrospective Analysis

Volume 7 , Issue 1 , June 2020 , Pages 8-17

Authors

Dler A. Khursheed 1

1 Department of Periodontics, College of Dentistry, Sulaimani University, Sulaimani, Iraq.

DOI logo 10.17656/sdj.10101

Keywords

Abstract

Objective: The aim of this study was to evaluate the consequences of untreated mandibular first molar extraction space on alveolar
bone and adjacent teeth to suggest appropriate implant size selection and direction of its placement to achieve a favorable relationship
between the prosthetic part, the implant fixture, and the adjacent teeth.
Methods: This observational study evaluated 183 CBCT of mandibular first molar extraction spaces to measure adjacent teeth
angulations, height, width, and length of interdental crestal bone. Besides interdental distance, unopposed teeth overeruption, and
inferior alveolar nerve canal position were measured, and the continuous data have been subjected to the normality test to calculate the
Mean and median of the variables.
Results: Mean molar-premolar, molar-bone crest, and premolar bone crest angles were 48.5±12.14◦, 46.4±11.9◦ , and 84.8±9.0◦ ,
respectively. Mean molar-premolar crestal bone lengths 11.66 ± 2.32 mm. The median bone width was 6.46 mm, and the median
interdental distance was 7.54 mm. The mean alveolar crest to the roof of the inferior alveolar nerve canal was 16.42 ± 2.82 mm.
Conclusions: Untreated mandibular first molar extraction spaces significantly compromised interdental spaces and bone properties for
proposing proper implant size, positions, and angulations. 

Statistics
  • Article view580
  • Downloads0
  • Published at1 June 2020

  • RIS
  • BibTeX
  • EndNote
  • Mendeley
  • APA (7th edition)
  • MLA (9th edition)
  • Chicago
  • Harvard
  • IEEE
  • Vancouver