Abstract
ObjectiveThe aim of this study was to evaluate the relationship between the number of pillar implants of implant-supported fixed prostheses and the prevalence of periimplant disease.Material and MethodsClinical and radiographic data were obtained for the evaluation. The sample consisted of 32 patients with implant-supported fixed prostheses in function for at least one year. A total of 161 implants were evaluated. Two groups were formed according to the number of implants: G1) ≤5 implants and G2) >5 implants. Data collection included modified plaque index (MPi), bleeding on probing (BOP), probing depth (PD), width of keratinized mucosa (KM) and radiographic bone loss (BL). Clinical and radiographic data were grouped for each implant in order to conduct the diagnosis of mucositis or peri-implantitis.ResultsClinical parameters were compared between groups using Student's t test for numeric variables (KM, PD and BL) and Mann-Whitney test for categorical variables (MPi and BOP). KM and BL showed statistically significant differences between both groups (p<0.001). Implants from G1 – 19 (20.43%) – compared with G2 – 26 (38.24%) – showed statistically significant differences regarding the prevalence of peri-implantitis (p=0.0210).ConclusionIt seems that more than 5 implants in total fixed rehabilitations increase bone loss and consequently the prevalence of implants with periimplantitis. Notwithstanding, the number of implants does not have any influence on the prevalence of mucositis.
Highlights
Routine treatment of edentulism with fixed SURVWKHVHV VXSSRUWHG E\ RVVHRLQWHJUDWHG ¿[WXUHV DSSHDUV WR EH D KLJKO\ HI¿FLHQW PHWKRG JLYLQJ predictable long-term results in edentulous patient populations[1].Peri-implant diseases are one of factors responsible for implant failures
Our study considered that implants with peri-implantitis had to present SURELQJ GHSWK PP DW OHDVW RQH SRLQW ZLWK bleeding/suppuration on probing and radiographic bone loss >2 mm
The patients included in the study were those who had received osseointegrated implants with an H[WHUQDO KH[ PP FRQQHFWLRQ DQG ¿[HG PHWDO with resin prostheses supported by implants done at the Center of Teaching and Research in Dental Implants, placed in the Center of Sciences and Health (CCS) of the Federal University of Santa Catarina (UFSC) from 2004 to 2010
Summary
Routine treatment of edentulism with fixed SURVWKHVHV VXSSRUWHG E\ RVVHRLQWHJUDWHG ¿[WXUHV DSSHDUV WR EH D KLJKO\ HI¿FLHQW PHWKRG JLYLQJ predictable long-term results in edentulous patient populations[1]. Peri-implant diseases are one of factors responsible for implant failures. These lesions are commonly asymptomatic and frequently detected in follow-up visits. The presence of increased SURELQJ GHSWK PP 20,28 bleeding on probing and/or pus is a key factor that may facilitate the diagnosis of peri-implantitis. Peri-implantitis is characterized mainly by the presence of progressive bone loss which occurs after the biological response associated with the adaptation phase adjacent to the implant[2,22]. The term mucositis is related to the LQÀDPPDWRU\ OHVLRQ LQGXFHG E\ QRQVSHFL¿F ELR¿OP18 limited to peri-implant mucosa without involvement of bone tissue[13]
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