Dental Laboratory Production of Prosthetic Restorations in a Population in Sofia, Bulgaria: A Descriptive Study

Table 5

Proportions of crowned teeth and replaced teeth in anterior, premolar, or molar regions relative to the other two regions in upper and in lower cast/jaw of the laboratory sample (Lab) and of the epidemiological sample (Epi).

Region	Upper cast/jaw		P value	Lower cast/jaw		P value
	Lab	Epi	χ ^2	Lab	Epi	χ ^2
Crowned teeth
Anterior	175/186	134/244	.0003	44/135	15/207	.0001
Premolar	87/274	139/239	.0001	53/126	79/143	.205
Molar	99/262	105/273	.914	82/97	128/94	.018
Replaced teeth
Anterior	61/173	72/169	.356	25/123	43/144	.168
Premolar	96/138	96/145	.791	46/102	49/138	.325
Molar	77/157	73/168	.540	77/71	95/92	.824