title: Prosthetic Abutment Height is a Key Factor in Peri-implant Marginal Bone Loss.
abstract: In this study, we analyzed the influence of prosthetic abutment height on marginal bone loss (MBL) around implants in the posterior maxilla. In this retrospective cohort study, the radiographically determined MBL was related to the height of the abutments of internal conical connection implants at 6 and 18 months post-loading. Data were gathered on age, sex, bone substratum, smoking habit, history of periodontitis, and prosthetic features, among other variables. A linear mixed model was used for statistical analysis. The study included 131 patients receiving 315 implants. MBL rates at 6 and 18 months were mainly affected by the abutment height but were also significantly influenced by the bone substratum, periodontitis, and smoking habit. MBL rates were higher for prosthetic abutment < 2 mm vs. ≥ 2 mm, for periodontal vs. non-periodontal patients, for grafted vs. pristine bone, and for a heavier smoking habit. The abutment height is a key factor in MBL. MBL rates followed a non-linear trend, with a greater MBL rate during the first 6 months post-loading than during the next 12 months.
authors.affiliation: Oral Surgery and Implant Dentistry Department, School of Dentistry, University of Granada, Granada, Spain pgalindo@ugr.es.
authors.forename: P
authors.initials: P
authors.lastname: Galindo-Moreno
authors.affiliation: Oral Surgery and Implant Dentistry Department, School of Dentistry, University of Granada, Granada, Spain.
authors.forename: A
authors.initials: A
authors.lastname: León-Cano
authors.affiliation: Oral Surgery and Implant Dentistry Department, School of Dentistry, University of Granada, Granada, Spain.
authors.forename: I
authors.initials: I
authors.lastname: Ortega-Oller
authors.affiliation: Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, USA.
authors.forename: A
authors.initials: A
authors.lastname: Monje
authors.affiliation: Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, USA.
authors.forename: F
authors.initials: F
authors.lastname: Suárez
authors.affiliation: Department of Pathology, School of Medicine & IBIMER, University of Granada, Granada, Spain.
authors.forename: F
authors.initials: F
authors.lastname: ÓValle
authors.affiliation: Unit of Periodontology and Implantology, School of Dentistry, University of Bologna, Bologna, Italy.
authors.forename: S
authors.initials: S
authors.lastname: Spinato
authors.affiliation: Department of Experimental Psychology, School of Psychology, University of Granada, Granada, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Catena
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015519:Bone Density / Q000502:physiology; D016025:Bone Transplantation / Q000379:methods; D015331:Cohort Studies; D000044:Dental Abutments; D059605:Dental Implant-Abutment Design; D019094:Dental Prosthesis, Implant-Supported; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008437:Maxilla / Q000601:surgery; D008875:Middle Aged; D057873:Peri-Implantitis / Q000209:etiology*; D017622:Periodontal Attachment Loss / Q000145:classification; D010518:Periodontitis / Q000145:classification; D011862:Radiography, Panoramic; D012189:Retrospective Studies; D012907:Smoking; D013499:Surface Properties; D055815:Young Adult
keywords: dental implant; dental implant-abutment connection; peri-implantitis; sinus augmentation