Evaluation of Cavity Wall Adaptation of Bulk-fill Resin Composites in Class II Cavities of Primary Molar (유구치 2급 와동에서 bulk-fill 복합레진의 와동적합성 평가)

배영은; Jonghyun Shin (신종현); Tae-sung Jeong (정태성); Shin Kim (김신); Jiyeon Kim (김지연)

doi:10.5933/JKAPD.2017.44.4.446

Evaluation of Cavity Wall Adaptation of Bulk-fill Resin Composites in Class II Cavities of Primary Molar

Journal of the Korean academy of pediatric dentistry
Abbr : J Korean Acad Pediatr Dent
2017, 44(4), pp.446-454
DOI : 10.5933/JKAPD.2017.44.4.446
Publisher : The Korean Academy Of Pediatric Dentistry
Research Area : Medicine and Pharmacy > Dentistry

배영은 ¹, Jonghyun Shin ¹, Tae-sung Jeong ¹, Shin Kim ¹, Jiyeon Kim ¹

¹부산대학교

Accredited

ABSTRACT

Recently, there have been many studies on bulk-fill resin composites. However, studies on the proper materials for pediatric patients are rare. The aim of this study was to compare the cavity wall adaptation of bulk-fill resin composites with conventional resin composite in class II cavities of primary molars using microcomputed tomography (micro-CT). Standardized class II slot cavities were prepared in 80 exfoliated primary molars and randomly divided into 4 groups. The control group was restored with conventional resin composite, Filtek Z-350 XT (FZ), and the three groups were restored with bulk-fill resin composites, Filtek bulk-fill posterior (FB), Tetric N-Ceram Bulk Fill (TNC), Filtek bulk-fill flowable (FBF). All specimens were thermocycled and then immersed in 50% silver nitrate (AgNO3) solution. Micro-CT was used to measure the penetration volume of the total silver nitrate and the degree of cervical marginal leakage and the number, size, and position of the voids were evaluated. The results revealed that the volume of silver nitrate were significantly different between FB and FZ (p < 0.05). The results also revealed that the penetration length of silver nitrate FBF showed statistically lower than the FZ and FB p( < 0.05). There was no significant difference between the groups in number and size of voids. In conventional resin composite, most of the voids were present inside the restoration (83.3%), but the voids in the bulk-fill resin composites incidence were higher in the gingivoaxial angle. The cavity wall adaptation demonstrated in class II restorations of primary molar by new bulk fill resin composites was similar to conventional incremental technique. Bulk-fill resin composites might be an clinical option for a faster restoration in deciduous teeth.

KEYWORDS

Bulk-fill resin composites, Cavity wall adaptation, Marginal leakage, Primary molar, Class II cavity, Micro CT

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Journal of the Korean academy of pediatric dentistry 2023 KCI Impact Factor : 0.48

Evaluation of Cavity Wall Adaptation of Bulk-fill Resin Composites in Class II Cavities of Primary Molar

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* References for papers published after 2023 are currently being built.

Journal of the Korean academy of pediatric dentistry 2023 KCI Impact Factor : 0.48

Evaluation of Cavity Wall Adaptation of Bulk-fill Resin Composites in Class II Cavities of Primary Molar

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