European Journal of Molecular & Clinical Medicine

Background: Implant stability is influenced by a combination of surface topography and macroscopic levels of implant design. In reduced bone height situations, short implants are often considered a viable alternative to long implants, which often require additional augmentation procedures. The objective of this finite element study was to evaluate the peri-implant Von Mises stresses, strains and micro movements distribution in D2 bone quality around short implants of 6mm length with varying diameters of 4mm, 5mm and 6mm and different thread designs under immediate loading.
Materials& Methods: The study was conducted to evaluate the Von Mises stress, strain and micro movements distribution in D2 bone quality under immediate loading at department of periodontis at Rajasthan Dental College & Hospital, Jaipur, Rajasthan. 3D FEM were developed to simulate mandibular molar crown, supported by an implant of 6mm length with variation of different diameter and thread designs. The material properties were derived from other studies 32 and assigned to the models. The modeling analyses were accomplished using a software program SPSS version 22.0.
Results: When all the three diameters were compared wide diameter i.e. 6mm diameter implants had the least values of peri-implant von mises stresses, strains and micro movements around them. When thread shapes were taken into consideration the buttress thread created the most favourable stress parameters around them with minimum values of stress, strains and micro movements.
Conclusion: Short implants combined with a wide diameter and platform switching can be used in atrophic ridges or when there is a need of extensive surgery to prepare the implant site. Further randomized clinical trials are required to validate the results of this study.