Effects of Different Undersizing Site Preparations on Implant Stability

Bernardo Ferreira Lemos, Paula Lopez-Jarana, Carlos Falcao, Blanca Ríos-Carrasco, Javier Gil, José Vicente Ríos-Santos and Mariano Herrero-Climent
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Bernardo Ferreira Lemos: Faculty of Health Sciences, Fernando Pessoa University, 4249-004 Porto, Portugal
Paula Lopez-Jarana: Porto Dental Institute, 4150-518 Porto, Portugal
Carlos Falcao: Faculty of Health Sciences, Fernando Pessoa University, 4249-004 Porto, Portugal
Blanca Ríos-Carrasco: Department of Periodontology, University of Seville, 41009 Seville, Spain
Javier Gil: Faculty of Dentistry, Bioengineering Institute of Technology, International University of Catalonia, 08017 Barcelona, Spain
José Vicente Ríos-Santos: Department of Periodontology, University of Seville, 41009 Seville, Spain
Mariano Herrero-Climent: Porto Dental Institute, 4150-518 Porto, Portugal

IJERPH, 2020, vol. 17, issue 23, 1-12

Abstract: As immediate loading protocols are becoming more frequent, the primary stability of implants has become an essential criterion for the osseointegration of dental implants. Based on this, the objective of this study was to understand the influence of different undersized surgical preparation sites on the insertion torque (IT) and implant stability quotient (ISQ). Four different site-preparation protocols were performed on fresh humid type III bovine bone: one control, the standard protocol recommended by the manufacturer (P1), and three variations of undersized techniques (P2, P3 and P4). The implant used was VEGA by Klockner Implant System. The sample size was n = 40 for each of the four groups. A torquemeter was used to measure the IT, and the ISQ was measured with a Penguin RFA. Both variables showed a tendency to increase as the preparation technique was reduced, although not all the values were statistically significant ( p < 0.05) when comparing with the standard preparation. The preparations without a cortical drill, P2 and P4, showed better results than those with a cortical drill. Given the limitations of this study, it can be concluded that reducing the implant preparation can increase both the IT and ISQ. Removing the cortical drill is an effective method for increasing implant stability, although it should be used carefully.

Keywords: dental implant; underpreparation; implant preparation; implant stability; insertion torque; ISQ; RFA (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
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