S Jacker-Guhr1, G Ibarra2, L S Oppermann3, A-K Lührs3, A Rahman3, W Geurtsen3. 1. Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Hannover Medical School, 30625, Carl-Neuberg-Strasse 1, Hannover, Germany. Jacker-Guhr.Silke@mh-hannover.de. 2. Department of Restorative Dentistry, Oregon Health and Science University, 3181 S.W. Sam Jackson Park Rd., Portland, OR, 97239-3098, USA. 3. Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Hannover Medical School, 30625, Carl-Neuberg-Strasse 1, Hannover, Germany.
Abstract
OBJECTIVES: The aim of this study was the evaluation of microleakage in class V cavities using micro-CT imaging and dye penetration. MATERIALS AND METHODS: Sixty class V cavities were prepared, randomly divided into five groups (Adper Single Bond Plus (ASB), ExciTE (EX), iBond TE (ITE), Optibond Solo Plus (OSP), Prime & Bond NT (PB)) and restored with Venus Diamond. After thermocycling and dye penetration test with 50 wt% ammoniacal silver nitrate, eight samples per group were sectioned longitudinally and evaluated under a coaxial incident light microscope (enamel (E) and dentin (D) measurement in mm). The remaining samples were analyzed by counting voids in the coronal and cervical adhesive areas by means of micro-CT. RESULTS: In dentin, no statistically significant difference in dye penetration was found. In enamel, OSP showed significant higher microleakage than all other adhesives (p < 0.001). Groups ITE, ASB, PB, and EX showed a significantly lower penetration depth in E than in D (p < 0.001). The results of the micro-CT examination in dentin are contrary to the findings of the microleakage evaluation. Regarding enamel, only group PB showed significant more voids than EX in enamel (p < 0.02). Within the adhesive groups, PB showed significantly more voids in E than in D (p < 0.04). CONCLUSIONS: This test method must be optimized by developing a new leakage tracer for a better differentiation between hard tissues and dental materials. CLINICAL RELEVANCE: The micro-CT is not yet a vulnerable tool to evaluate the marginal integrity of resin composites.
OBJECTIVES: The aim of this study was the evaluation of microleakage in class V cavities using micro-CT imaging and dye penetration. MATERIALS AND METHODS: Sixty class V cavities were prepared, randomly divided into five groups (Adper Single Bond Plus (ASB), ExciTE (EX), iBond TE (ITE), Optibond Solo Plus (OSP), Prime & Bond NT (PB)) and restored with Venus Diamond. After thermocycling and dye penetration test with 50 wt% ammoniacal silver nitrate, eight samples per group were sectioned longitudinally and evaluated under a coaxial incident light microscope (enamel (E) and dentin (D) measurement in mm). The remaining samples were analyzed by counting voids in the coronal and cervical adhesive areas by means of micro-CT. RESULTS: In dentin, no statistically significant difference in dye penetration was found. In enamel, OSP showed significant higher microleakage than all other adhesives (p < 0.001). Groups ITE, ASB, PB, and EX showed a significantly lower penetration depth in E than in D (p < 0.001). The results of the micro-CT examination in dentin are contrary to the findings of the microleakage evaluation. Regarding enamel, only group PB showed significant more voids than EX in enamel (p < 0.02). Within the adhesive groups, PB showed significantly more voids in E than in D (p < 0.04). CONCLUSIONS: This test method must be optimized by developing a new leakage tracer for a better differentiation between hard tissues and dental materials. CLINICAL RELEVANCE: The micro-CT is not yet a vulnerable tool to evaluate the marginal integrity of resin composites.
Entities:
Keywords:
Class V cavities; Dye penetration; Micro-CT; Microleakage
Authors: Carola A Carrera; Caixia Lan; David Escobar-Sanabria; Yuping Li; Joel Rudney; Conrado Aparicio; Alex Fok Journal: Dent Mater Date: 2015-01-30 Impact factor: 5.304
Authors: Markus Heyder; Bernd Sigusch; Christoph Hoder-Przyrembel; Juliane Schuetze; Stefan Kranz; Markus Reise Journal: PLoS One Date: 2022-06-23 Impact factor: 3.752