Sergio Alexandre Gehrke1, José Luis Calvo Guirado2, Raphaël Bettach3, Massimo Del Fabbro4, Carlos Pérez-Albacete Martínez5, Jamil Awad Shibli6. 1. Department of Research Biotecnos - Technology and Science, Santa Maria Brazil, Catholic University San Anotnio of Murcia, Murcia, Spain. 2. Chairman of International Research Cathedra, Universidad Católica San Antonio de Murcia (UCAM), Murcia, Spain. 3. Adjunct Associate Professor New York University, New York, USA. 4. Academic Researcher, Università degli Studi di Milano, Director of the Research Center in Oral Health, Department of Biomedical, Surgical and Dental Sciences, IRCCS Istituto Ortopedico Galeazzi, Milano, Italy. 5. Associate Professor of International Research Cathedra, Universidad Católica San Antonio de Murcia (UCAM), Murcia, Spain. 6. Department of Periodontology and Oral Implantology, Dental Research Division, University of Guarulhos, Guarulhos, SP, Brazil.
Abstract
OBJECTIVE: The purpose of the present study was to compare the insertion torque and implant stability quotient between different drill design for implant site preparation. MATERIALS AND METHODS: Synthetic blocks of bone (type I density) were used for drilling procedures. Three groups were evaluated: Group G1 - drilling with a single bur for a 4.2 mm conical implant; Group G2 and Group G3 - drilling with three consecutive burs for a 4.1 mm cylindrical implant and for a 4.3 mm conical implant respectively. For each group, 15 drilling procedures were performed without irrigation for 10-mm in-depth. The drilled hole quality (HQ) after the osteotomy for implant site preparation was measured in the five-first holes through a fully automated roundness/cylindricity instrument at three levels (top, middle, and bottom of the site). The insertion torque value (ITV) was achieved with a computed torquimeter and the implant stability quotient (ISQ) values were measured using a resonance frequency apparatus. RESULTS: The single drill (group 1) achieved a significantly higher ITV and ISQ than the multiple drills for osteotomy (groups 2 and 3). Group 1 and 3 displayed significantly better HQ than group 2. CONCLUSIONS: Within the limitations of the study, the results suggest that the hole quality, in addition to the insertion torque, may significantly affect implant primary stability.
OBJECTIVE: The purpose of the present study was to compare the insertion torque and implant stability quotient between different drill design for implant site preparation. MATERIALS AND METHODS: Synthetic blocks of bone (type I density) were used for drilling procedures. Three groups were evaluated: Group G1 - drilling with a single bur for a 4.2 mm conical implant; Group G2 and Group G3 - drilling with three consecutive burs for a 4.1 mm cylindrical implant and for a 4.3 mm conical implant respectively. For each group, 15 drilling procedures were performed without irrigation for 10-mm in-depth. The drilled hole quality (HQ) after the osteotomy for implant site preparation was measured in the five-first holes through a fully automated roundness/cylindricity instrument at three levels (top, middle, and bottom of the site). The insertion torque value (ITV) was achieved with a computed torquimeter and the implant stability quotient (ISQ) values were measured using a resonance frequency apparatus. RESULTS: The single drill (group 1) achieved a significantly higher ITV and ISQ than the multiple drills for osteotomy (groups 2 and 3). Group 1 and 3 displayed significantly better HQ than group 2. CONCLUSIONS: Within the limitations of the study, the results suggest that the hole quality, in addition to the insertion torque, may significantly affect implant primary stability.
Authors: Helena Francisco; Gary Finelle; Fabien Bornert; Rebecca Sandgren; Valentin Herber; Nils Warfving; Benjamin E Pippenger Journal: Clin Oral Investig Date: 2021-05-05 Impact factor: 3.573