Araya Phonghanyudhอารยา พงษ์หาญยุทธChutima Theerareungchaisriชุติมา ธีระเรืองไชยศรีVarangkana Jirarattanasopaวรางคณา จิรรัตนโสภาMahidol University. Faculty of Dentistry. Department of Pediatric Dentistry2015-01-272017-01-102015-01-272017-01-102015-01-062014-05Phonghanyudh A, Theerareungchaisri C, Jirarattanasopa V. Clinical evaluation of class II high-viscosity glass ionomer cement and composite resin restorations in primary molars: one year result. M Dent J. 2014; 34(2): 129-36.0125-5614 (printed)https://repository.li.mahidol.ac.th/handle/20.500.14594/1153Objective: To evaluate the clinical and radiographic performances of highly viscous glass ionomer cement (GIC) and composite resin (CR) class II restorations in primary molars at 12-month follow-up. Materials and methods: Fifty-five pairs of primary molars with proximal dentin carious lesions in 37 children, aged 6-9 years, were studied. A split-mouth technique was designed. The teeth were randomly divided into 2 groups of restorative materials: highly viscous GIC ( Fuji IX GP:GC Co., Tokyo, Japan) and CR ( Filtek Z250:3M ESPE, St. Paul, U.S.A.). The restorations were evaluated clinically at 6 and 12 months following modified USPHS criteria. Bitewing radiographs were assessed at 12-month follow-up. All parameters of clinical and radiographic performances between the two groups were tested by Wilcoxon matched-pair signed-rank test. Results: The cumulative failure rates of GIC and CR restorations at 12-month follow-up were 2.08% and 4.41% respectively. There was no statistically significant difference in the failure rate of both materials. There were no statistically significant differences in the clinical and radiographic performances between the two groups. All parameters both clinical and radiographical were similar between GIC and CR restorations. Conclusion: Highly viscous glass ionomer cement and composite resin were highly effective materials for class II restoration in primary molars from 12- month results.engMahidol UniversityClass II restorationGlass ionomer cementComposite resinPrimary molarCumulative failureClinical evaluationOpen Access articleวิทยาสารทันตแพทยศาสตร์มหิดลMahidol Dental JournalArticleFaculty of Dentistry Mahidol University