Marginal adaptation of indirect restorations using different resin coating protocols
Braz. dent. j
; Braz. dent. j;23(6): 672-678, 2012. ilus, tab
Article
in En
| LILACS
| ID: lil-662425
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ABSTRACT
This study evaluated the influence of material combinations used in the resin coating technique (RCT) on the marginal adaptation of indirect restorations with gingival margins in enamel (EM) and cement (CM). Eighty third-molars were used. Two cavities were prepared in each tooth. The cavities were distributed into 16 groups. Cavities with EM were filled with the following material combinations G1 Single-Bond 2 (Sb2), G2 Sb2 + Bond/Scotchbond-Multipurpose (Sb2B), G3 Sb2 + Filtek-Flow Z350 (Sb2Fl), G4 Scotchbond-Multipurpose (SBMP), G5 Clearfil-S3 (CS3), G6 CS3 + Bond/Clearfil-SE Bond (CSE3B), G7 CS3 + Protect Liner F (CS3PL) and G8 Clearfil SE Bond + Protect Liner F (CSEBPL). The same combinations were applied to the cavities in CM G9, G10, G11, G12, G13, G14, G15, G16, respectively. The fillings were performed with the Sinfony-System (3M/ESPE). After 24 h, the teeth were submitted to thermocycling (2,000 cycles, 5° to 55°C) and load-cycling (50,000 cycles, 50 N). Next, the Caries-Detector (Kuraray) was applied to the restoration margins. Images from the proximal margin were evaluated using the Image-Tool 3.0 software. The results were submitted to ANOVA and Tukey's test (α=0.05). The mean values (%) for the groups were EM G1=46.68, G2=15.53, G3=19.83, G4=27.53; G5=59.49, G6=25.13, G7=34.37, G8=15.20; CM G9=38.38, G10=23.25, G11=26.97, G12=25.85, G13=37.81, G14=30.62, G15=29.17, G16=20.31. The highest percentages of marginal gap on EM or CM were found in the groups that did not use a liner. It can be concluded that the most appropriate RCT combinations were the groups that used a liner.
RESUMO
Este estudo avaliou a influência de diferentes combinações de materiais usados na técnica de selamento dentinário (TSD) sobre a adaptação marginal de restaurações indiretas, cujas margens gengivais localizam-se em esmalte (ME) ou cemento (MC). Oitenta terceiros molares foram selecionados e duas cavidades foram preparadas em cada dente, as quais foram distribuídas em 16 grupos. As cavidades com margem em esmalte foram forradas pelas seguintes combinações de materiais G1 Single-Bond2 (Sb2), G2 Sb2 + Bond/Scotchbond-Multipurpose (Sb2B), G3 Sb2 + Filtek-Flow Z350 (Sb2Fl), G4 Scotchbond-Multipurpose (SBMP), G5 Clearfil-S3 (CS3), G6 CS3 + Bond/Clearfil-SE Bond (CSE3B), G7 CS3 + Protect Liner F (CS3PL), G8 Clearfil SE Bond + Protect Liner F (CSEBPL). As mesmas combinações foram aplicadas às cavidades com margens em cemento G9, G10, G11, G12, G13, G14, G15, G16, respectivamente. As restaurações foram confeccionadas usando o sistema Sinfony (3M/ESPE). Após 24 h, os dentes restaurados foram submetidos à ciclagem térmica (2.000 ciclos - 5° a 55° C) e mecânica (50.000 ciclos, 50 N). Em seguida, Carie-Detector (Kuraray) foi aplicado sobre as margens das restaurações. As imagens obtidas da margem proximal foram avaliadas pelo software Image-Tool 3.0. Os resultados foram submetidos aos testes estatísticos ANOVA e Tukey (p<0,05). As médias (%) observadas para os grupos foram ME G1=46,68, G2=15,53, G3=19,83, G4=27,53; G5=59,49, G6=25,13, G7=34,37 e G8=15,20; MC G9=38,38, G10=23,25, G11=26,97, G12=25,85, G13=37,81, G14=30,62, G15=29,17, G16=20,31. Os maiores valores de desadaptação marginal encontrados em ME e MC foram encontrados nos grupos que não utilizaram um "liner". Desta forma, pôde-se concluir que a combinação mais apropriada para a TSD é aquela que faz uso do "liner".
Key words
Full text:
1
Index:
LILACS
Main subject:
Dental Marginal Adaptation
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Composite Resins
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Dental Cavity Lining
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Dental Materials
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Dental Restoration, Permanent
Type of study:
Clinical_trials
Limits:
Humans
Language:
En
Journal:
Braz. dent. j
Journal subject:
ODONTOLOGIA
Year:
2012
Type:
Article
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Project document