title: Permanent teeth pulpotomy survival analysis: retrospective follow-up.
abstract: OBJECTIVE
  The aim of the present study is to evaluate risk factors influencing the success rates of pulpotomies both in young and adult populations.
  
  
  METHODS
  Pulpotomies (n=273) performed by a single endodontic specialist were analyzed, and data on success rates were collected. Additionally, possible explanatory variables were noted such as: age, gender, clinical findings (teeth, type of restoration after pulpotomy), radiographic findings (dentin bridge formation) and systemic conditions. The follow-up period varied from 1 to 29 years, and the results were analyzed by Kaplan-Meier survival curves and also by Cox regression.
  
  
  RESULTS
  Age at the time of pulpotomy ranged from 8 to 79 and had not influenced the success rates (p=0.35). The formation of dentin bridge had a strong protective effect (hazard ratio-HR=0.16, p<0.001). The prosthetic crown restorations following pulpotomy had the smallest failure rate, and amalgam has not increased the risk of failure significantly in relation to prosthesis. Resin composite restorations following pulpotomy increased in 263% the risk of failure (HR=3.63, p<0.001).
  
  
  CONCLUSIONS
  This study allowed inferences that pulpotomy may be a successful treatment at any age, and not only for young permanent teeth. It was also possible to conclude that the use of direct composite restorations following pulpotomies is associated with higher failure rates.
authors.affiliation: Pontifical Catholic University of Rio Grande do Sul Rua, Landel de Moura 2797, casa 105, Porto Alegre, RS, 91920-150, Brazil.
authors.forename: Gustavo Golgo
authors.initials: GG
authors.lastname: Kunert
authors.affiliation: Private Practice, Florêncio Ygartua 271, sala 201, Porto Alegre, RS 90430-010, Brazil.
authors.forename: Itaborai Revoredo
authors.initials: IR
authors.lastname: Kunert
authors.affiliation: Hospital Moinhos de Vento, Av. João Wallig 1800, sala 3001, Porto Alegre, RS 91340-001, Brazil.
authors.forename: Luiz Cesar
authors.initials: LC
authors.lastname: da Costa Filho
authors.affiliation: Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga 6681, Prédio 6, sala 507, Porto Alegre, RS, Brazil, postal code: 90619-900. Electronic address: jose.figueiredo@pucrs.br.
authors.forename: José Antônio Poli
authors.initials: JAP
authors.lastname: de Figueiredo
mesh_terms: D000180:Acrylic Resins; D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D003188:Composite Resins; D003723:Dental Amalgam; D003785:Dental Pulp Capping / Q000379:methods / Q000706:statistics & numerical data; D019232:Dental Restoration Failure; D005500:Follow-Up Studies; D006801:Humans; D053208:Kaplan-Meier Estimate; D008875:Middle Aged; D011140:Polyurethanes; D011672:Pulpotomy / Q000379:methods* / Q000706:statistics & numerical data*; D012189:Retrospective Studies; D012306:Risk; D012307:Risk Factors; D014070:Tooth / Q000000981:diagnostic imaging; D055815:Young Adult
chemical_list: D000180:Acrylic Resins; C029012:Composite Dental Resin; D003188:Composite Resins; D011140:Polyurethanes; D003723:Dental Amalgam
keywords: Clinical outcomes; Cohort studies; Endodontics; Pulp biology; Pulpotomy; Risk factors; Survival analysis