Etiology and clinical treatment strategies for second primary molars without permanent tooth germs
10.3760/cma.j.cn112144-20240317-00113
- VernacularTitle:第二前磨牙先天缺失的病因及临床管理策略
- Author:
Guohua YUAN
1
;
Yan WANG
Author Information
1. 武汉大学口腔医（学）院 口颌系统重建与再生全国重点实验室 口腔生物医学教育部重点实验室 口腔医学湖北省重点实验室，武汉 430079
- Keywords:
Growth and development;
The second premolars;
Genetic mutations;
Space management;
Clinical treatment strategy
- From:
Chinese Journal of Stomatology
2024;59(7):738-744
- CountryChina
- Language:Chinese
-
Abstract:
Congenital tooth agenesis is a type of craniofacial developmental anomaly with reduced number of teeth, which is caused by disturbances in tooth germ development. If the number of missing teeth is less than six (excluding the third molars), it is termed as hypodontia. The second premolars are most commonly affected. When the second premolars are missing, the second primary molars are more prone to suffer from retention, infraocclusion, caries, pulpitis, or periapical periodontitis. Without timely prevention and appropriate treatment, congenital loss of second premolars may cause adverse effects on the patients′ tooth arrangement, occlusal function, craniofacial development, and even future prosthetic treatment. This review summarises the aetiological and diagnostic features of the agenesis of second premolars, and discusses the clinical considerations of retaining or extracting the second primary molars without permanent tooth germs, when the absence of permanent tooth germs is fully established or not, so as to provide references for dentists.
