title: Impact of local and systemic factors on additional peri-implant bone loss.
abstract: OBJECTIVE
  To assess the impact of local and systemic factors on additional peri-implant bone loss.
  
  
  METHODS
  From a total of 253 patients, 193 were selected (126 women) and restored with 722 implants, in place for at least 1 year. Patients had previously attended the supportive periodontal/peri-implant therapy program at the Department of Implant Dentistry at the Federal University of Santa Catarina, Brazil. The study was divided according to physiologic (PBL < 2 mm) or additional bone loss (ABL >= 2 mm) evaluated from the time of prosthesis placement to the reassessment visit. Data collection and analysis included evaluation of systemic factors, such as history of periodontal disease, heart disease, hypertension, diabetes mellitus, hyperthyroidism/hypothyroidism, osteoporosis, kidney disease, alcohol abuse, smoking habits, chemotherapy, radiation therapy, menopause, and hormone replacement. Analysis of local factors included implant platform, diameter, location, time in function, and type of prosthesis.
  
  
  RESULTS
  No systemic factors influenced ABL (P > .05). Considering local factors, only time in function and type of prosthesis influenced ABL (P < .05).
  
  
  CONCLUSIONS
  Fixed partial dental prostheses and full-arch fixed prostheses present higher rates of ABL. In addition, all types of prostheses showed greater ABL when in function for more than 4 years.
authors.affiliation: Federal University of Santa Catarina, Florianopolis, Brazil. joaogustavo_s@hot-mail.com
authors.forename: João Gustavo
authors.initials: JG
authors.lastname: de Souza
authors.forename: Armando Rodrigues
authors.initials: AR
authors.lastname: Neto
authors.forename: Guenther Schuldt
authors.initials: GS
authors.lastname: Filho
authors.forename: Haline Renata
authors.initials: HR
authors.lastname: Dalago
authors.forename: José Moisés
authors.initials: JM
authors.lastname: de Souza Júnior
authors.forename: Marco Aurélio
authors.initials: MA
authors.lastname: Bianchini
mesh_terms: D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000209:etiology*; D002318:Cardiovascular Diseases / Q000150:complications; D003442:Crowns / Q000009:adverse effects*; D019094:Dental Prosthesis, Implant-Supported / Q000009:adverse effects*; D003824:Denture, Complete / Q000009:adverse effects*; D003830:Denture, Partial, Fixed / Q000009:adverse effects*; D048909:Diabetes Complications; D005260:Female; D020249:Hormone Replacement Therapy / Q000009:adverse effects; D006801:Humans; D007674:Kidney Diseases / Q000150:complications; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D010024:Osteoporosis / Q000150:complications; D010510:Periodontal Diseases; D011859:Radiography; D012907:Smoking / Q000009:adverse effects; D013959:Thyroid Diseases / Q000150:complications; D013997:Time Factors