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Complication rates for various retention types in anterior implant-supported prostheses: A retrospective clinical study

 Byoung-Heon Kim  ;  Bo-Ah Lee  ;  Seong-Ho Choi  ;  Young-Taek Kim 
 JOURNAL OF PROSTHETIC DENTISTRY, Vol.125(2) : 273-278, 2021-02 
Journal Title
Issue Date
Dental Implants* / adverse effects ; Dental Prosthesis Retention ; Dental Prosthesis, Implant-Supported / adverse effects ; Dental Restoration Failure* ; Esthetics, Dental ; Humans ; Retrospective Studies
Statement of problem: Implant-supported prostheses have typically been retained by cement or screws, each of which has advantages and disadvantages. Two new types of prosthesis with complementary advantages and disadvantages have been proposed: the screw- and cement-retained prosthesis, which combines cement and screw retention, and the antiloosening inner-post screw (ALIPS) type, which uses lateral screws. Both esthetic and functional factors should be considered for anterior prostheses; however, clinical studies of the complication rates of these designs are lacking. Purpose: The purpose of this retrospective clinical study was to evaluate the complications of dental implant-supported restorations with various prosthetic types in the anterior region and to analyze other factors that affect complications. Material and methods: This study included 51 patients who had 83 implants placed in the anterior region by a single clinician between August 2009 and December 2016. Surgical and prosthetic features were recorded, and implant complications were analyzed. Results: There were 45 (55.4%) cement-retained implants, 5 (6.0%) screw- and cement-retained prosthesis implants, and 32 (38.6%) ALIPS-retained implants. Peri-implant mucositis was observed most frequently in the ALIPS type (21.9%), but the biological complications did not differ significantly with the prosthetic type. The most common mechanical complication was loss of retention in the cement type of prosthesis (30.4%) and screw loosening in the ALIPS type (43.8%). Implant complications varied with position (maxilla or mandible) and implantation timing (period from tooth extraction to implant placement). Conclusions: The complications of implants placed in the anterior region were affected by different factors but did not differ significantly with the type of the retention.
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2. College of Dentistry (치과대학) > Dept. of Periodontics (치주과학교실) > 1. Journal Papers
Yonsei Authors
Choi, Seong Ho(최성호) ORCID logo https://orcid.org/0000-0001-6704-6124
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