title: Effects of implant drilling parameters for pilot and twist drills on temperature rise in bone analog and alveolar bones.
abstract: This study concerns the effects of different drilling parameters of pilot drills and twist drills on the temperature rise of alveolar bones during dental implant procedures. The drilling parameters studied here include the feed rate and rotation speed of the drill. The bone temperature distribution was analyzed through experiments and numerical simulations of the drilling process. In this study, a three dimensional (3D) elasto-plastic dynamic finite element model (DFEM) was proposed to investigate the effects of drilling parameters on the bone temperature rise. In addition, the FE model is validated with drilling experiments on artificial human bones and porcine alveolar bones. The results indicate that 3D DFEM can effectively simulate the bone temperature rise during the drilling process. During the drilling process with pilot drills or twist drills, the maximum bone temperature occurred in the region of the cancellous bones close to the cortical bones. The feed rate was one of the important factors affecting the time when the maximum bone temperature occurred. Our results also demonstrate that the elevation of bone temperature was reduced as the feed rate increased and the drill speed decreased, which also effectively reduced the risk region of osteonecrosis. These findings can serve as a reference for dentists in choosing drilling parameters for dental implant surgeries.
authors.affiliation: Department of Vehicle Engineering, National Pingtung University of Science and Technology, 1, Shuefu Road, Neipu, Pingtung, Taiwan.
authors.forename: Yung-Chuan
authors.initials: YC
authors.lastname: Chen
authors.affiliation: Department of Orthopedics, E-Da Hospital, No.1 E-Da Road, Yuan-Chau District, Kaohsiung, Taiwan . Electronic address: shiaujk@gmail.com.
authors.forename: Chih-Kun
authors.initials: CK
authors.lastname: Hsiao
authors.affiliation: Department of Vehicle Engineering, National Pingtung University of Science and Technology, 1, Shuefu Road, Neipu, Pingtung, Taiwan.
authors.forename: Ji-Sih
authors.initials: JS
authors.lastname: Ciou
authors.affiliation: Department of Orthopedics, E-Da Hospital, No.1 E-Da Road, Yuan-Chau District, Kaohsiung, Taiwan.
authors.forename: Yi-Jung
authors.initials: YJ
authors.lastname: Tsai
authors.affiliation: Department of Orthopedics, E-Da Hospital, No.1 E-Da Road, Yuan-Chau District, Kaohsiung, Taiwan . Electronic address: edtuyk@gmail.com.
authors.forename: Yuan-Kun
authors.initials: YK
authors.lastname: Tu
mesh_terms: D000818:Animals; D001863:Bone Screws / Q000009:adverse effects*; D015921:Dental Implants; D004548:Elasticity; D020342:Finite Element Analysis; D008334:Mandible / Q000601:surgery*; D013552:Swine; D013696:Temperature
chemical_list: D015921:Dental Implants
keywords: Elasto-plastic dynamic finite element model; Osteonecrosis; Temperature rise