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At least 307 records · Page 17Linked to original sources
PubMed1980

[Titanium spray-layered human tooth root implantation under physiological stress].

Titanium-plasma-flame-spray coated endodontic stabilizers have been implanted in six patients after apicectomy. These endodontic stabilized teeth have been postoperatively under physiological stress. Histologically in one case there was six month post-operatively bone in direct contact to the implant surface and in certain areas the structure of a new periodontal membrane was formed.

Bone Regeneration↗
PubMed1995

[Biocem--a new material for retrograde tooth root filling].

This paper describes the application of a new material, Biocem, for retrograde root-canal filling. The series included 222 teeth, including 234 roots treated during the period 1987-1992. This material consists of two components and once mixed, the autopolymerisation results in a three-dimensional structure. The biomechanical, histological and clinical longterm follow-up confirms the optimal qualities of this material, fulfilling the requirements in regard to biocompatibility, watertight sealing and application. The material proved to be superior in comparison to conventional materials and ceramics. The significant reduction of complications and the new apposition, as well as the evaluation of the results are most encouraging.

Calcium Phosphates↗
PubMed1989

[Fine structure of the root resorption of human deciduous tooth].

During growth and development of the gnathic bone in infants, it is not possible to observe the processes of resorption of the bone and deciduous tooth root, bone formation and calcification of the permanent teeth separately. In the gnathic bone of infants where a normal balance exists between formation of new tissue and resorption, the formative bone tissue is closely related to the cells which give rise to the deciduous and the permanent teeth. We used a scanning electron microscope to observe the fine structure of the root resorption of the deciduous teeth, using root deciduous teeth extracted from humans. Large and small plate-shaped absorbed fossula were found together with projecting dentinal fiber tubuli in the dentinal resorption cavity of the deciduous tooth root. Odontoclasts with a round form supported and covered by fibrous connective tissue were also observed. Furthermore, when the fibrous tissue was removed washed out, an arrangement of calcified collagen fibers (similar to stromal tissue) was found in the cavity. On the absorbed cementum surface a plate-like resorption cavity had formed. The surface was covered by fibrous connective tissue with a regular pattern. The round and oval odontoclasts were surrounded by thick vascular-like connective tissue. High levels of P and Ca were found in the dentinal absorption cavity by X-ray analysis and Al, Mg, Na and Zn were also found. S, P, Ca and Zn were found in the odontoclasts Ca, P, Mg, Na and Zn were found in the cementum resorption cavity.

Humans↗
PubMed1990

[Root fractures and tooth luxations. 1].

Root fractures and subluxation of teeth often play only a minor role in the discussion of the therapy of traumatic tooth defects. This contribution discusses possible therapeutic approaches as well as prognosis and long-term results in cases of tooth root fractures and partially dislocated teeth. The primary aim of the therapy is to avoid further damage to the developing teeth of the first set, and to keep the permanent teeth in a proper condition for the maximum time possible.

Humans↗
PubMed1995

Effect of ND:YAG laser irradiation and root planing on the root surface: structural and thermal effects.

Effects of ND:YAG laser irradiation on untreated and root planed tooth roots were investigated to determine whether a cleaning effect and/or removal of smear layer could be achieved without concomitant microstructural or thermal damage. Sixty (60) healthy extracted teeth were either untreated, irradiated only, root planed only, or irradiated and root planed. Intra-pulpal and surface temperatures were monitored during irradiation, then SEM was performed. Smear layer elimination was achieved without inducing hard tissue microstructural damage at 5W, using pulse durations and intervals of 0.1 s, a fluence of 0.77 J/cm2, and a total energy density of approximately 700 J/cm2. However, these results were not consistent in all samples. At these parameters, intra-pulpal temperature increases of 9 to 22 degrees C and surface temperature increases of 18 to 36 degrees C were recorded. Thus, despite their effectiveness for smear layer removal, these parameters may not be appropriate for clinical use as an adjunct to conventional periodontal therapy.

Body Temperature↗