title: Outcomes of one-step incomplete and complete excavation in primary teeth: a 24-month randomized controlled trial.
abstract: OBJECTIVE
  To compare 24-month pulp health outcomes of partial caries removal (PCR) and total caries removal (TCR) with composite restoration in primary molars.
  
  
  METHODS
  48 children aged 3-8 years with at least one molar with a deep carious lesion were included. 120 teeth were randomized to control (TCR; n = 54; 69% class II) and test (PCR; n = 66; 63% class II) groups. Total absence of carious tissue was confirmed using a blunt-tipped probe in the TCR group. For PCR, excavation was stopped when hardened, dried dentin with a leathery consistency was achieved. Pulpotomy was performed in cases of pulp exposure.
  
  
  RESULTS
  Pulp exposure occurred in 2 and 27.5% of teeth treated with PCR and TCR, respectively (p < 0.01). The operative time was significantly higher for TCR than PCR. Success rates were 92 and 96% in the PCR and TCR groups, respectively (p = 0.34). The success rate tended to be lower in occlusoproximal (92%) than in occlusal (100%) lesions (p = 0.08).
  
  
  CONCLUSIONS
  The clinical and radiographic success rates of PCR and TCR in primary teeth with deep carious lesions were high and did not differ significantly, indicating that PCR is a reliable minimally invasive approach in primary teeth and that the retention of carious dentin does not interfere with pulp vitality. Moreover, PCR provided other clinically relevant advantages over TCR, especially lower incidence of pulp exposure and lower operative time.
authors.affiliation: Department of Pediatric Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
authors.forename: Renata
authors.initials: R
authors.lastname: Franzon
authors.forename: Lizandra F
authors.initials: LF
authors.lastname: Guimarães
authors.forename: Camila E
authors.initials: CE
authors.lastname: Magalhães
authors.forename: Alex N
authors.initials: AN
authors.lastname: Haas
authors.forename: Fernando B
authors.initials: FB
authors.lastname: Araujo
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D002648:Child; D002675:Child, Preschool; D003188:Composite Resins / Q000737:chemistry; D057087:Dental Atraumatic Restorative Treatment / Q000379:methods; D003731:Dental Caries / Q000628:therapy*; D003737:Dental Cavity Preparation / Q000379:methods*; D003764:Dental Materials / Q000737:chemistry; D003782:Dental Pulp / Q000473:pathology; D003789:Dental Pulp Exposure / Q000628:therapy; D003793:Dental Restoration, Permanent / Q000379:methods; D003804:Dentin / Q000473:pathology; D017220:Dentin-Bonding Agents / Q000737:chemistry; D004311:Double-Blind Method; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008963:Molar / Q000473:pathology*; D011672:Pulpotomy / Q000379:methods; D016019:Survival Analysis; D013997:Time Factors; D014094:Tooth, Deciduous / Q000473:pathology*; D016896:Treatment Outcome
chemical_list: D003188:Composite Resins; D003764:Dental Materials; D017220:Dentin-Bonding Agents; C533204:filtek Z350; C115612:single bond; D017438:Bisphenol A-Glycidyl Methacrylate