One year clinical evaluation of two different types of composite resins in posterior teeth.
OBJECTIVE
The aim of this study was to assess the clinical performance of two adhesive restorative systems (Single Bond/Filtek P-60 and Single Bond/Filtek Z-250) in posterior teeth using a modified United States Public Health Service (USPHS) system.


METHODS
A total of 70 restorations were placed in molars and premolars in 30 patients (14 females and 16 males; 18-40 years) by one operator. All restorations were directly evaluated by two examiners at baseline, six months, and 12 months using the following modified USPHS rating criteria: marginal integrity, marginal discoloration, surface texture, contour, postoperative sensitivity, and recurrent caries.


RESULTS
At six and 12 months all restorations were available for evaluation of marginal discoloration, surface texture, contour, postoperative sensitivity, and recurrent caries that remained with 100% Alpha-ratings at recalls for both restorative systems. Marginal integrity for P-60 was scored as 94.3% and 91.4% Alpha at six and 12 months, respectively, and rates for Z-250 were 100% and 97.1% Alpha at six and 12 months, respectively. Statistical analysis was completed with Fisher's exact and McNemar Chi-square tests at a significance level of 5% (P<0.05).


CONCLUSIONS
All restorations were clinically satisfactory and no significant differences were found among them.


CONCLUSIONS
Posterior resin composite restorations placed under appropriate conditions provide a satisfactory clinical performance.
Gianordoli Neto
Ranulfo
R
Department of Operative Dentistry at the Federal University of Espírito Santo in Espírito Santo, Brazil.
Santiago
Sérgio Lima
SL
Mendonça
Juliano Sartori
JS
Passos
Vanara Florêncio
VF
Lauris
José Roberto Pereira
JR
Navarro
Maria Fidela de Lima
MF
D000293:Adolescent; D000328:Adult; D001641:Bicuspid / Q000473:pathology; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D003116:Color; D003188:Composite Resins / Q000737:chemistry*; D003731:Dental Caries / Q000209:etiology; D003737:Dental Cavity Preparation / Q000379:methods; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000379:methods*; D003807:Dentin Sensitivity / Q000209:etiology; D017220:Dentin-Bonding Agents / Q000737:chemistry; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008963:Molar / Q000473:pathology; D012008:Recurrence; D016037:Single-Blind Method; D013499:Surface Properties
D003188:Composite Resins; D017220:Dentin-Bonding Agents; C438835:Filtek P60 Composite Resin; C444701:Filtek Z250; C115612:single bond; D017438:Bisphenol A-Glycidyl Methacrylate