[The question of reliability of the clinical findings of non-vital teeth with or without radiographically-apparent periapical changes].
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Dental Pulp Devitalization↗
Biomedical subjects
K R Jahn
Publications and source records attributed to K R Jahn.
[Secondary caries].
On the basis of a survey of the literature, the author emphasizes the considerable clinical importance of secondary caries and the dependence of its incidence upon the filling material used. Further predisposing factors (such as marginal leakage, cavity preparation, age and size of the filling, and the kind of cavity wall working) are discussed, and relevant measures for the prevention of secondary caries are presented.
Acrylic Resins↗
[Cavity preparation with regard to various filling materials].
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Dental Cavity Preparation↗
[Macromorphologic variability of the 2 main sites of predilection in both dentitions].
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Adolescent↗
[The use of machine punch cards and their mode of processing in the framework of studies of large groups of patients].
The authors describe the use of machine punch cards in the framework of the examination of a great group of subjects and present a processing scheme. They advocate the use of this technique in case of abundance of informations and relatively simple questions.
Diagnosis, Computer-Assisted↗
[Roentgenological evaluation of success of nonvital teeth following treatment with dental post and crown].
For the purpose of a comparative study on the occurrence of periapical changes in non-vital teeth after application of pin crowns, the authors examined radiologically 379 teeth, 175 of which had been apicectomized. The groups of teeth with pin crowns was compared with the group of apicectomized teeth with pin crowns and with a control group of 60 teeth which had only had endodontic treatment. The statistical analysis showed that the group of teeth with pin crowns did not differ significantly from the control group in the occurrence of periapical changes. On the contrary, there was a marked increase in periapical changes in the group of apicectomized teeth with pin crowns compared to the two other groups. This difference was statistically significant.
Apicoectomy↗