Dental Anomalies in Parry-Romberg Syndrome: A 40-Year Retrospective Review

Abstract

Objective

This study investigates crown and root anomalies in patients with Parry-Romberg Syndrome.

Design

This is a retrospective review of patients with Parry-Romberg Syndrome who were evaluated at a tertiary care center from 1980-2020.

Setting

Patients seen in the dental unit from 1980-2020.

Patients, Participants

Seventeen patients with documented Parry-Romberg Syndrome were referred for dental evaluation.

Main Outcome Measures

All dental anomalies were documented. Root anomalies were assessed using panoramic radiographs and cone beam CT (CBCT) scans to evaluate buccal-lingual, mesio-distal, and axial measurements of hypoplastic teeth, which were compared to those of contralateral teeth.

Results

Findings included agenesis (29%, n = 5), hypoplastic teeth (29%, n = 5), delayed canine eruption (24%, n = 4), and mulberry molars (12%, n = 2). Of the five patients with tooth hypoplasia, four had CBCT records and the fifth had panoramic radiographs available for assessment. Axial length was always shorter in hypoplastic teeth relative to contralateral teeth, with differences ranging from 1.2-9.2 mm. Differences in crown size of hypoplastic versus contralateral teeth were unpredictable but always present.

Conclusions

Patients with Parry-Romberg Syndrome can have hypoplastic roots with atypical crown morphology. A patient’s specific dental anomaly will influence planning and treatment.