Yim S, Yang IH, Baek SH. Characterization of dental phenotypes and treatment modalities in Korean patients with Parry-Romberg syndrome.
Korean J Orthod 2020;
50:407-417. [PMID:
33144530 PMCID:
PMC7642227 DOI:
10.4041/kjod.2020.50.6.407]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 06/09/2020] [Accepted: 06/30/2020] [Indexed: 12/03/2022] Open
Abstract
Objective
To investigate the dental phenotypes and treatment modalities (Tx-Mod) in Korean patients with Parry–Romberg syndrome (PRS) using longitudinal data.
Methods
The samples consisted of 10 PRS patients, who were treated and/or followed-up at Seoul National University Dental Hospital between 1998 and 2019. Using a novel PRS severity index based on the numbers of the atrophy-involved area and asymmetry-involved item, we classified them into mild (n = 3), moderate (n = 2), and severe (n = 5). Dental phenotypes, including congenitally missing tooth (Con-Missing-Tooth), microdontia, tooth with short root (Short-Root), tooth with dilacerated root, and delayed eruption/impacted tooth, were investigated along with Tx-Mod.
Results
The side of occurrence of all dental phenotypes showed 100% concordance with the side of PRS involvement. The most two common dental phenotypes were Con-Missing-Tooth and Short-Root (n = 29 and n = 17 in six patients). The sums of the average number of Con-Missing-Tooth and Short-Root increased from mild PRS to moderate PRS and severe PRS cases (1.0, 6.0, and 6.2). In terms of Tx-Mod, growth observation due to mild atrophy, fixed orthodontic treatment, and grafting were used for mild PRS cases. Tx-Mod for moderate PRS cases involved growth observation for surgery due to an early age at the initial visit. For severe PRS cases, diverse Tx-Mod combinations including unilateral functional appliance, fixed orthodontic treatment, growth observation, grafting, and orthognathic surgery were used.
Conclusions
The novel PRS severity index may be useful to provide primary data for individualized diagnosis and treatment planning for PRS patients.
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