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Biomechanical evaluation of oversized drilling technique on primary implant stability measured by insertion torque and resonance frequency analysis

BACKGROUND: This study evaluated the influence of implant site preparation depth on primary stability measured by insertion torque and resonance frequency analysis (RFA). MATERIAL AND METHODS: Thirty-two implant sites were prepared in eight veal rib blocks. Sixteen sites were prepared using the conv...

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Detalles Bibliográficos
Autores principales: Santamaría-Arrieta, Gorka, Brizuela-Velasco, Aritza, Fernández-González, Felipe J., Chávarri-Prado, David, Chento-Valiente, Yelko, Solaberrieta, Eneko, Diéguez-Pereira, Markel, Vega, José-Antonio, Yurrebaso-Asúa, Jaime
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medicina Oral S.L. 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4930641/
https://www.ncbi.nlm.nih.gov/pubmed/27398182
http://dx.doi.org/10.4317/jced.52873
Descripción
Sumario:BACKGROUND: This study evaluated the influence of implant site preparation depth on primary stability measured by insertion torque and resonance frequency analysis (RFA). MATERIAL AND METHODS: Thirty-two implant sites were prepared in eight veal rib blocks. Sixteen sites were prepared using the conventional drilling sequence recommended by the manufacturer to a working depth of 10mm. The remaining 16 sites were prepared using an oversize drilling technique (overpreparation) to a working depth of 12mm. Bone density was determined using cone beam computerized tomography (CBCT). The implants were placed and primary stability was measured by two methods: insertion torque (Ncm), and RFA (implant stability quotient [ISQ]). RESULTS: The highest torque values were achieved by the conventional drilling technique (10mm). The ANOVA test confirmed that there was a significant correlation between torque and drilling depth (p<0.05). However, no statistically significant differences were obtained between ISQ values at 10 or 12 mm drilling depths (p>0.05) at either measurement direction (cortical and medullar). No statistical relation between torque and ISQ values was identified, or between bone density and primary stability (p >0.05). CONCLUSIONS: Vertical overpreparation of the implant bed will obtain lower insertion torque values, but does not produce statistically significant differences in ISQ values. Key words:Implant stability quotient, overdrilling, primary stability, resonance frequency analysis, torque.