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Biomedical subjects

K Kristen

Publications and source records attributed to K Kristen.

10 recordsLinked to original sources
PubMed1978

[The effect of the shape of aluminum oxide-ceramic implants on its staying power in the dog mandible].

Investigations were carried out on implants of Al2O3 ceramic as secondary single toothe replacement in the lower jaw of young Beagle test dogs. Two basically different forms with altogether 7 variations were tested: the first three types of implants had conical roots and a further 4 had cylindrical roots. Common to all 7 types was an implantation shoulder which was tested for its ability to conduct the masticatory force via the cortical substance to the mandibular bone. All implants are at least under indirect masticatory strain; type 80-40-027-00 was directly under strain: part of the implant, shaped like a premolar protrudes through the gum directly into the oral cavity. Preliminary results show that cylindrical root shapes stood the test well. Their length was of no great importance. Conical root shapes without special provision of retention are not suitable. Firm positioning of the implant during introduction is of prime importance. A cortically placed implantation shoulder is not suitable for the conduction of the masticatory pressure into the mandibular bone in dogs.

Aluminum Oxide↗
PubMed1977

[The dentist's responsibility in the oral rehabilitation of patients with chronic kidney diseases].

It is important that the dentist knows about disturbances of blood coagulation during and after hemo-dialysis, so that he avoids administration of platelet-inhibiting medication like aspirin and that he recognizes radiologically visible signs of insufficient dialysis in the jaws. Because of the reduced protection from infections, antibiotic prophylaxis should be carried out before every dental operation, the medication of choice being penicillin. Due to the high rate of infection by the hepatitis B virus, adequate protection is required.

Focal Infection, Dental↗
PubMed1977

[Odontomas with special reference to Gardner's syndrome].

Analysis of world literature appears to show that large hard odontomata of the jaw are relatively rare. 43 such odontogenous tumours are reported which were treated during 30 years in the maxillo-facial clinic in Heidelberg and in which the feasibility of mandibular reconstruction following partial resection was considered. The attention of dentists and maxillo-facial surgeons is drawn to odontomata, which are part of the symptom complex of Gardner's syndrome; a case is described where this rare disease presented.

Adult↗