Table 2.

Perceptions, clinical experience and continuing education aspects in OHCPs

Questions		Total OHCPs	Australia		Chile
			GDPs	OHTs	GDPs
		N (%)	N (%)	N (%)	N (%)
Do you encounter teeth with MIH in your practice? (YES)		203 (88.6)	44 (95.7)**	66 (100)**	93 (79.5)**
In what other permanent teeth have you encountered MIH-like defects?	Premolars	71 (66.4)	12 (63.2)**	16 (47.1)**	43 (79.6)**
	Second permanent molars	16 (15.0)	5 (26.3)**	11 (32.4)**	0**
	Canines	20 (18.6)	2 (10.5)**	7 (20.5)**	11 (20.4)**
Do you notice these defects in the primary dentition? (YES)		200 (90.1)	41 (89.1)*	64 (98.5)*	95 (85.6)*
Do you feel the incidence has increased in the period of your practice? (YES)		95 (68.8)	22 (84.6)*	40 (81.6)*	33 (52.4)*
Would you refer a child who has signs of MIH to a paediatric specialist for treatment?	Yes or when possible	129 (56.6)	37 (78.7)**	45 (69.2)**	47 (40.5)**
	No	99 (43.4)	10 (21.3)**	20 (30.8)**	69 (59.5)**
What type of restorative material do you often use to treat these teeth? (Only those YES answers are shown)	Amalgam and other direct materials	18 (7.9)	3 (6.4)	3 (4.6)	12 (10.3)
	CR exclusively	10 (4.4)	1 (2.1)	0	9 (7.8)
	GIC exclusively	63 (27.6)	10 (21.3)	23 (35.4)	30 (25.9)
	RMGIC exclusively	14 (6.1)	2 (4.3)	1 (1.5)	11 (9.5)
	CR, GIC and RMGIC combined	72 (31.6)	6 (12.8)*	18 (27.7)*	48 (41.4)*
	PC combined with direct materials	43 (18.9)	25 (53.2)**	16 (24.6)**	2 (1.7)**
	Others, e.g., cast rest, extractions and fluoride	8 (3.5)	0	4 (6.2)	4 (3.4)
Are you receiving any information on MIH? (YES)		117 (51.5)	22 (46.8)*	45 (68.2)*	50 (43.9)*
Total		230	47	66	117
			113

Results may not add due to missing values

OHCPs oral health care practitioners, GDPs general dental practitioners, OHTs oral health therapists, MIH molar incisor hypomineralisation, CR composite resin, GIC glass ionomer cements, RMGIC resin modified glass ionomer cements, PC preformed crowns

**Significant differences by X ² p < 0.001, *significant differences by X ² p < 0.05