J Korean Assoc Oral Maxillofac Surg.  2022 Dec;48(6):342-347. 10.5125/jkaoms.2022.48.6.342.

Cystic lesion between a deciduous tooth and the succeeding permanent tooth: a retrospective analysis of 87 cases

  • 1Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Yangsan, Korea


The purpose of this study is to investigate the characteristics of dentigerous and radicular cysts that occur between deciduous and succeeding permanent teeth and to propose considerations for differential diagnosis of cysts at the treatment planning stage in the outpatient clinic.
Materials and Methods
A total of 87 patients with a cystic lesion located between a deciduous tooth and the succeeding permanent tooth participated in the study. Twelve variables were analyzed to diagnose such a cyst. For data analysis, Fisher’s exact test was used to determine the statistical significance of the variables.
Of the total 87 patients who participated in this study, 69 were diagnosed with dentigerous cysts and 18 were diagnosed with radicular cysts. Seven of the 12 differential factors analyzed in this study were statistically significant: age, location, symptoms, dental caries, endodontic treatment, delayed eruption, and size.
Several criteria can be considered for diagnosis of dentigerous cysts or radicular cysts. Age, location, presence of symptoms and dental caries, previous endodontic treatment, cystic size, and delayed eruption of impacted permanent teeth are reliable factors that should be considered when diagnosing dentigerous and radicular cysts.


Dentigerous cyst; Radicular cyst; Deciduous tooth; Unerupted tooth


  • Fig. 1 The panoramic radiographs. A. Dentigerous cyst. B. Radicular cyst.

  • Fig. 2 The location of dentigerous cyst and radicular cyst in the jaw.

  • Fig. 3 The position of the dentigerous cyst and the radicular cyst. A. Central type of the dentigerous cyst. B. Lateral type of the dentigerous cyst. C. Central type of the radicular cyst. D. Lateral type of the radicular cyst.



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