Void characteristics and tortuosity of calcium silicate-based cements for regenerative endodontics: a micro-computed tomography analysis

BMC Oral Health

Su-Sung Jo¹  Sang-Yeop Chung¹  Yun Hyeong Kim²  Yong Kwon Chae³  Sung Chul Choi³  Ok Hyung Nam³ 

[1] Department of Civil and Environmental Engineering, Sejong University, Seoul, Republic of Korea;Department of Dentistry, Graduate School, Kyung Hee University, Seoul, Republic of Korea;Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University, Kyungheedae-Ro 26, Dongdaemoon-Gu, 02447, Seoul, Republic of Korea;

关键词: Calcium silicate cement;    Dental materials;    Regenerative endodontic protocol;    Sealing ability;    Tortuosity;   

DOI  :  10.1186/s12903-021-01940-2

来源: Springer

【 摘 要 】

BackgroundInternal voids of materials can serve a hub for microorganism and affect the sealing ability. This study aimed to evaluate the sealing performance of calcium silicate-based cements in immature teeth treated with regenerative endodontics.MethodsTwenty single root canals from immature permanent premolars were prepared using regenerative endodontic protocols. The root canals were randomly divided into two groups and sealed with mineral trioxide aggregate (MTA) and Biodentine (BD). The teeth were kept in humid environment for 7 days and scanned using micro-computed tomography. The voids within the cements were segmented and visualized using image processing, incorporating the modified Otsu algorithm. The porosity of each sample was also calculated as the ratio between the number of voxels of voids and the volume of the cements. Tortuosity was also calculated using the A-star algorithm.ResultsVoids larger than 70 μm were predominantly observed in the top and interfacial surface of cements. The others were evenly distributed. MTA and BD showed the same level of porosity and tortuosity at interfacial surfaces. In inner surfaces, MTA showed more less porosity and tortuosity compared to BD (p < 0.05).ConclusionsThere were no differences in sealing performance between MTA and BD.

【 授权许可】

CC BY