pISSN 2234-7518
eISSN 2005-372X

Table. 4.

Distribution of microdontia, delayed eruption/impacted tooth, and tooth with dilacerated root according to the Parry–Romberg syndrome (PRS) severity index

PRS severity index Patient Affected side Microdontia Delayed eruption/impacted tooth Tooth withdilacerated root Match with side involvement



Existence Number Existence Number Existence Number
Mild #1 Right × × ○ (#43) 1
#4 Right × × ×
#8 Left ○ (#24,26) 2 ○ (#24) 1 ×
Moderate #3 Left ○ (#23,26) 2 × ×
#5 Right ○ (#13,14,16,17,44,45) 6 × ×
Severe #2 Right × ○ (#13,17) 2 ×
#6 Right ○ (#13,15) 2 × ×
#7 Left × × ○ (#22) 1
#9 Left × × ×
#10 Left × × ×
n = 4 (40%) n = 2 (20%) n = 2 (20%) n = 7/7 (100%)

Mild, Total score < 140; Moderate, total score between 140 and 170; Severe, total score ≥ 180.

Korean J Orthod 2020;50:407~417 https://doi.org/10.4041/kjod.2020.50.6.407
© Korean J Orthod
Copyright © The Korean Association of Orthodontists. All Rights Reserved. / Powered by INFOrang Co., Ltd