Research progress on ankylosis of primary molars

Ankylosis of primary molars is a kind of eruption abnormality of the teeth, where the periodontal membrane disappears, owing to a bony union between bone and root. Studies have shown that the common proportion of ankylosed primary molars is 1.3%~8.9% with an equal occurrence. In the primary dentitio...

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Main Authors: DONG Ning, JIANG Qiu
Format: Article
Language:zho
Published: Editorial Department of Journal of Prevention and Treatment for Stomatological Diseases 2023-05-01
Series:口腔疾病防治
Subjects:
Online Access:http://www.kqjbfz.com/CN/10.12016/j.issn.2096-1456.2023.05.010
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author DONG Ning
JIANG Qiu
author_facet DONG Ning
JIANG Qiu
author_sort DONG Ning
collection DOAJ
description Ankylosis of primary molars is a kind of eruption abnormality of the teeth, where the periodontal membrane disappears, owing to a bony union between bone and root. Studies have shown that the common proportion of ankylosed primary molars is 1.3%~8.9% with an equal occurrence. In the primary dentition, the mandibular first primary molar is the most commonly affected tooth, while in the middle mixed dentition stage of development, the second primary molar is more affected. Its etiology may be related to genetics, signaling pathways of mineralization metabolism of local alveolar bone or cementum, cytokines secreted by epithelial rest cells of Malassez, and enhanced inflammatory reactions during physiological absorption of roots. Ankylosis of primary molars can be diagnosed by clinical symptoms and imaging and is classified as mild, moderate and severe according to the degree of infraocclusion. As it may cause a series of complications, such as occlusal disturbances, delayed exfoliation and incomplete alveolar process development, multidisciplinary treatment, including in the departments of pediatric dentistry, orthodontics, periodontics and prosthodontics, should be adopted, and long-term treatment is determined based on the patient's age, severity of infraocclusion, and presence of permanent teeth. This review summarizes the etiology, diagnosis, complications and treatment of ankylosed primary molars to provide a reference for the clinical diagnosis and treatment of decidual molar fixation.
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spelling doaj.art-0a1a625ff29f45eda40626398ce1db9b2023-02-03T07:10:22ZzhoEditorial Department of Journal of Prevention and Treatment for Stomatological Diseases口腔疾病防治2096-14562023-05-0131537037410.12016/j.issn.2096⁃1456.2023.05.010Research progress on ankylosis of primary molarsDONG Ning 0 JIANG Qiu 1Department of Pediatric Dentistry, Hospital of Stomatology, Jilin UniversityDepartment of Pediatric Dentistry, Hospital of Stomatology, Jilin UniversityAnkylosis of primary molars is a kind of eruption abnormality of the teeth, where the periodontal membrane disappears, owing to a bony union between bone and root. Studies have shown that the common proportion of ankylosed primary molars is 1.3%~8.9% with an equal occurrence. In the primary dentition, the mandibular first primary molar is the most commonly affected tooth, while in the middle mixed dentition stage of development, the second primary molar is more affected. Its etiology may be related to genetics, signaling pathways of mineralization metabolism of local alveolar bone or cementum, cytokines secreted by epithelial rest cells of Malassez, and enhanced inflammatory reactions during physiological absorption of roots. Ankylosis of primary molars can be diagnosed by clinical symptoms and imaging and is classified as mild, moderate and severe according to the degree of infraocclusion. As it may cause a series of complications, such as occlusal disturbances, delayed exfoliation and incomplete alveolar process development, multidisciplinary treatment, including in the departments of pediatric dentistry, orthodontics, periodontics and prosthodontics, should be adopted, and long-term treatment is determined based on the patient's age, severity of infraocclusion, and presence of permanent teeth. This review summarizes the etiology, diagnosis, complications and treatment of ankylosed primary molars to provide a reference for the clinical diagnosis and treatment of decidual molar fixation.http://www.kqjbfz.com/CN/10.12016/j.issn.2096-1456.2023.05.010tooth ankylosisprimary molarinfraocclusionhuman periodontal ligament cellsdental developmental anomalieswnt signaling pathwayepithelial cell rests of malassezreceptor activator for nuclear factor-κb ligand
spellingShingle DONG Ning
JIANG Qiu
Research progress on ankylosis of primary molars
口腔疾病防治
tooth ankylosis
primary molar
infraocclusion
human periodontal ligament cells
dental developmental anomalies
wnt signaling pathway
epithelial cell rests of malassez
receptor activator for nuclear factor-κb ligand
title Research progress on ankylosis of primary molars
title_full Research progress on ankylosis of primary molars
title_fullStr Research progress on ankylosis of primary molars
title_full_unstemmed Research progress on ankylosis of primary molars
title_short Research progress on ankylosis of primary molars
title_sort research progress on ankylosis of primary molars
topic tooth ankylosis
primary molar
infraocclusion
human periodontal ligament cells
dental developmental anomalies
wnt signaling pathway
epithelial cell rests of malassez
receptor activator for nuclear factor-κb ligand
url http://www.kqjbfz.com/CN/10.12016/j.issn.2096-1456.2023.05.010
work_keys_str_mv AT dongning researchprogressonankylosisofprimarymolars
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