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Clinical factors influencing implant positioning by guided surgery using a nonmetal sleeve template in the partially edentulous ridge: Multiple regression analysis of a prospective cohort

 Jin-Young Park  ;  Young Woo Song  ;  Seung-Hyun Park  ;  Jang-Hyun Kim  ;  Ji-Man Park  ;  Jung-Seok Lee 
 CLINICAL ORAL IMPLANTS RESEARCH, Vol.31(12) : 1187-1198, 2020-12 
Journal Title
Issue Date
Computer-Aided Design ; Cone-Beam Computed Tomography ; Dental Implantation, Endosseous ; Dental Implants* ; Humans ; Imaging, Three-Dimensional ; Prospective Studies ; Regression Analysis ; Surgery, Computer-Assisted*
accuracy ; clinical research ; guided implant surgery ; multiple regression analysis ; nonmetal sleeve template
Objective: To determine the positional accuracy of implants placed with a three-dimensionally printed template having nonmetal sleeves and to determine the contributing factors to observed deviations. Materials and methods: One hundred and eighty-seven implants placed in 72 patients were analyzed. Presurgical intraoral scans and cone-beam computed tomography images obtained before and after surgery were superimposed, and vertical, angular, platform, and apex deviations were measured between the virtually planned and actually placed positions. A multiple linear regression model was designed for identifying the contributing factors. Statistical significance was set at p < .05, with Bonferroni correction if necessary (p < .0167). Results: A total of 187 implants demonstrated deviations of 0.65 [0.56, 0.75] mm (mean [95% confidence interval]) vertically, 3.59° [3.30°, 3.89°] angularly, 1.16 [1.04, 1.28] mm at platform, and 1.50 [1.36, 1.65] mm at apex. Implants placed in the mandible showed larger angular, platform, and apex deviations compared with those in the maxilla (p = .049, p = .014 and p = .003, respectively). Implants placed at the third or fourth nearest sites from the most-distal tooth had larger deviations than those placed at the first or second nearest sites, in vertical, platform, and apical aspects (p = .015, p = .011 andp = .018, respectively). This was only applicable to free-ending-supported templates (p < .0167), and anchor pin-supported free-ending templates (p < .0167). Conclusion: Using a three-dimensionally printed surgical template with a nonmetal sleeve in the partial edentulous ridge resulted in larger deviations in implants placed in the mandible or distal free-end third or fourth nearest site.
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2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Periodontics (치주과학교실) > 1. Journal Papers
Yonsei Authors
Park, Ji-Man(박지만) ORCID logo https://orcid.org/0000-0003-0018-1166
Song, Young Woo(송영우) ORCID logo https://orcid.org/0000-0003-1835-5646
Lee, Jung Seok(이중석) ORCID logo https://orcid.org/0000-0003-1276-5978
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