Table 2.

Distribution of the number and location of congenitally missing tooth and tooth with short root, and concordance between their side of occurrence and the side affected by Parry–Romberg syndrome (PRS), according to the PRS severity index

Phenotype	PRS severity index	Patient	Affected side	Existence in the maxillary and mandibular arches	Maxilla						Mandible					Match with PRS side involvement
					Existence in the maxillary arches	Incisor/canine	Premolar	Molar	Sum		Existence in the mandibular arches	Incisor/canine	Premolar	Molar	Sum
Congenitally missing tooth	Mild	#1	Right	×
		#4	Right	×
		#8	Left	○	○	#23	#25		2							○
	Moderate	#3	Left	○	○		#24,25	#27	3							○
		#5	Right	○	○		#15		1		○	#42			1	○
	Severe	#2	Right	○	○		#14,24		2							○
		#6	Right	○	○	#12	#14	#16,17	4		○	#41	#44,45	#46,47	5	○
		#7	Left	×
		#9	Left	○	○	#21,22,23	#24,25	#26,27	7		○	#31,32	#34,35		4	○
		#10	Left	×
				60% (n = 6/10)	100% (n = 6/6)	5	9	5	19		50%(n = 3/6)	4	4	2	10	100% (n = 6/6)
Tooth with short root	Mild	#1	Right	×
		#4	Right	×
		#8	Left	○	○		#24		1							○
	Moderate	#3	Left	○	○	#23			1							○
		#5	Right	○	○	#13	#14	#16,17	4		○		#44,45		2	○
	Severe	#2	Right	○	○			#17	1							○
		#6	Right	○	○	#13	#15		2							○
		#7	Left	×
		#9	Left	×
		#10	Left	○	○		#24,25	#27	3		○		#34,35	#37	3	○
				60% (n = 6/10)	100% (n = 6/6)	3	5	4	12		33%(n = 2/6)	0	4	1	5	100% (n = 6/6)

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