Author/Editor		Gašperšič, D; Kosec, L
Title		Trdota sklenine v zobni kroni, skleninskih biserih in skleninskih jezikih
Translated title		Enamel microhardness of dental crowns, enamel pearls and enamel extensions
Type		članek
Source		Zobozdrav Vestn
Vol. and No.		Letnik 50, št. 3-5
Publication year		1995
Volume		str. 116-9
Language		slo
Abstract		The microhardness of dental enamel was measured in 20 upper third molars, four enamel pearls and four enamel extensions. A Vickers type of microhardness tester was used. In the dental crowns, the average value for occlusal enamel was 398 HV while that for cervical enamel was 311 HV, in 11 teeth, a statistically significant positive correlation was demonstrated between the values measured in cervical enamel and the distance of the test site from the cervical enamel border (R=0.52-0.85, p=0.001-0.05). Pearl enamel showed similar microhardness properties as crown enamel. The lowest mean value was obtained for enamel extensions. The results indicate that variations in the microhardness of dental enamel may partly be responsible for differences in the occurrence of cervical erosions. The obtained values suggest that an enamel extension forms part of the dental crown, whereas an enamel pearl is an independent formation resembling a supernumerary tooth.
Descriptors		DENTAL ENAMEL HARDNESS TESTS MOLAR