The accuracy of implant placement using simplified drilling protocol in vitro study on bone type D3

Abstract

A proper dental implant’s position provides predictable hygienic, esthetic, and functional outcomes. Thus, the accuracy of implant placement is important. A simplified drilling protocol is using a pilot drill, followed by the final drill. This technique helps shorten the surgical time, whereas conventional drilling protocol uses a serial of gradual drills to widen the implant bed preparation. However, there is no study on the accuracy of implant placement using simplified drilling protocol. Thus, this study aimed to compare the accuracy of implant placement by using simplified drilling protocol with conventional drilling protocol. This study evaluated the accuracy of implant placement by using simplified drilling protocol in-vitro study on bone type D3. Artificial mandibular model with single edentulous space of tooth no.36 was prepared as a mother model. Subsequently 40 models were made out from the mother model by using polyurethane and integrated the synthetic bone for bone type D3 (Misch’s classification). CoDiagnostiX™ software was employed to print out 3D surgical guided template. In this study, there were 40 dummy bone level taper implants with diameter 4.8 mm and length 10 mm and 5 mm T-sleeve. After that, a surgeon would position surgical guide template into individual study model and placed implant under simplified drilling protocol and conventional drilling protocol. CoDiagnostiX™ software was used to assess the deviation of implant placement at entry point, apical point and angulation, and differences in variables were determined by unpaired t-test. According to conventional drilling technique, the accuracy of implant placement in bone type D3 revealed that the deviations at angle, the base and the tip aspects were 3.35±1.42 ∘ , 1.11±0.55 mm, and 1.50±0.53 mm, respectively. For simplified drill protocol, 3D offset deviation was 2.66±1.33 ∘ at angle, 0.82±0.44 mm at the base and 1.19±0.53 mm at the tip. However, the results showed no statistically significant difference between simplified drilling protocol and conventional drilling protocol in base 3D offset, tip 3D offset and angulation. Implication of the thesis: Simplified drilling protocol would be one of the options that clinicians might use to save time when doing dental implant surgery.