Panoramic Findings for Predicting Eruption of Mandibular Premolars Associated With Dentigerous Cyst After Marsupialization

Fujii, Ryosuke; Kawakami, Masayoshi; Hyomoto, Masamitsu; Ishida, Junichi; Kirita, Tadaaki

doi:10.1016/j.joms.2007.06.652

« Previous Next »Journal of Oral and Maxillofacial Surgery
Volume 66, Issue 2 , Pages 272-276, February 2008

Panoramic Findings for Predicting Eruption of Mandibular Premolars Associated With Dentigerous Cyst After Marsupialization

Ryosuke Fujii, DDS
- Research Fellow, Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
Masayoshi Kawakami, DDS, PhD
- Assistant Professor, Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
- Address correspondence and reprint requests to Dr Kawakami: Department of Oral and Maxillofacial Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan
Masamitsu Hyomoto, DDS, PhD
- Postdoctoral Fellow, Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
Junichi Ishida, DDS
- Graduate Student, Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.
Tadaaki Kirita, DDS, DMSc
- Professor and Chair, Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara, Japan.

Purpose

The purpose of this study was to investigate the eruption of mandibular premolar teeth associated with dentigerous cysts.

Patients and Methods

A total of 60 cyst-associated teeth in the mandibular premolars were examined retrospectively by using normalized panoramic radiographs. The subjects were divided into 2 groups: the erupted group, in which the teeth had erupted spontaneously after marsupialization, and the nonerupted group. Patient age, as well as impacted premolar angulation to the adjacent teeth axes, the cusp depth, space/tooth size, eruption period and cyst size, as measured on initial images, were used as parameters.

Results

Using a logistic model of our data, we found that patient age less than 10 years, cusp depth less than 5.1 mm, angulations less than 25°, and space/tooth size greater than 1.0 enhanced the success of eruption.