Regional odontodysplasia accompanied by hypodontia: a case report and literature review
10.12016/j.issn.2096-1456.202440521
- Author:
ZHANG Beibei
1
;
HUANG Yongqing
2
;
DUAN Xiaohong
3
Author Information
1. State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, the Fourth Military Medical University 2Ningxia Key Laboratory of Oral Disease Research; Ningxia Key Laboratory of Craniomaxillofacial Deformities Research; Department of Oral and Maxillafacial Surgery, Hospital of Stomatology, the General Hospital of Ningxia Medical University.
2. Ningxia Key Laboratory of Oral Disease Research; Ningxia Key Laboratory of Craniomaxillofacial Deformities Research; Department of Oral and Maxillafacial Surgery, Hospital of Stomatology, the General Hospital of Ningxia Medical University
3. State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, the Fourth Military Medical University
- Publication Type:Journal Article
- Keywords:
regional odontodysplasia;
"ghost" teeth;
odontogenesis;
hypodontia;
tooth eruptio;
imaging;
cone beam CT;
deciduous dentition;
mixed dentition
- From:
Journal of Prevention and Treatment for Stomatological Diseases
2025;33(7):580-586
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the clinical and imaging characteristics of patients with regional odontodysplasia accompanied by hypodontia and to provide a reference for clinical diagnosis and treatment.
Methods:This report presents the imaging manifestations, diagnosis, and treatment of a case of regional odontodysplasia (RO) accompanied by hypodontia. It includes a retrospective summary of the dynamic changes in the imaging characteristics of the affected teeth over a 5-year period, along with a comparative analysis of the literature. The patient was a 9-year-old female who presented to the Clinic of Oral Rare and Genetic Diseases of our hospital with the chief complaint of “discomfort for over seven months following the extraction of the teeth in the left mandibular region.” Based on her clinical manifestations and imaging findings, she was diagnosed with RO in the left mandible and with hypodontia of permanent teeth 12 and 34. A treatment plan was formulated, and long-term follow-up was conducted. The current radiographic images were compared with previous imaging data to summarize the developmental changes in her teeth, and a comparative analysis was also performed with the literature to identify similarities and differences with previously reported RO dental characteristics.
Results:During the follow-up period, the patient's symptoms did not worsen, and a conservative observation approach was adopted; the treatment plan was decided after the eruption of the affected teeth. By comparing and analyzing imaging data from three ages (4.5, 8.5, and 9 years old), it was determined that the deciduous and permanent teeth in the left mandible of this patient exhibited typical “ghost” radiographic features, alongside hypodontia of teeth 12 and 34, as well as the delayed development of tooth 35. A literature review and analysis indicated that RO manifests clinical characteristics such as delayed tooth eruption, reduced tooth size, and yellow crowns, along with typical “ghost” radiographic appearances. Treatment requires a personalized approach based on the patient’s specific condition. To date, only five cases of RO patients with hypodontia have been reported, while the delayed development of permanent tooth buds has not yet been documented.
Conclusion:For patients with RO, dynamic imaging evaluation plays a critical role in early diagnosis. RO is associated with hypodontia and delayed tooth germ development. Long-term follow-up and personalized treatment plans are the key to RO treatment.
- Full text:2025071015480630978区域性牙发育不良伴发先天缺牙1例报道及文献回顾.pdf
