J Korean Acad Pediatr Dent.  2019 Aug;46(3):255-264. 10.5933/JKAPD.2019.46.3.255.

Comparative Histologic Study of 3-Root Canal Filling Materials for Dog's Teeth

Affiliations
  • 1Department of Pediatric Dentistry, College of Dentistry, Yonsei University, Korea. SONGJS@yuhs.ac
  • 2Department of Conservative Dentistry, College of Dentistry, Yonsei University, Korea.

Abstract

Endodontic treatment of primary molars is a great challenge to the dentists because of their complex morphology. However, there have been limited controlled in vivo studies about filling materials for primary teeth. Hence, the aim of this study is to evaluate and compare histologic responses of different calcium hydroxide canal filling materials that are used in daily clinical practice. Pulpectomies were performed in 132 teeth of the dogs. The root canals were randomly filled with either Vitapex® (n = 44), Metapex® (n = 44), or Metapaste® (n = 44). After 4 or 13 weeks, respectively after operation, the dogs were sacrificed, and teeth were processed for histologic examinations. Inflammatory reaction was evaluated and scored in a blind manner. The Fisher's exact test and Kruskal-Wallis test were used to compare the tested groups. In 4-week-group, all inflammatory responses were in normal range except for fibrosis. In 13-week-group, increased response to various inflammation reaction was shown compared to the 4-week-group. However, there were no statically significant differences between the tested groups in all inflammatory reaction. Overall, there were no significant differences among three materials in responses of apical tissues and all of them showed favorable tissue responses.

Keyword

Pulpectomy; Root canal filling material; Calcium hydroxide; Tissue response; Histologic analysis

MeSH Terms

Animals
Calcium Hydroxide
Dental Pulp Cavity
Dentists
Dogs
Fibrosis
Humans
Inflammation
Molar
Pulpectomy
Reference Values
Tooth*
Tooth, Deciduous
Calcium Hydroxide
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