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At least 703 records · Page 39Linked to original sources
PubMed2006

Internal resorption treated with mineral trioxide aggregate in a primary molar tooth: 18-month follow-up.

Mineral trioxide aggregate (MTA) repair of a mandibular second-primary molar tooth with an inflammatory resorptive defect in the coronal third of the root canal is reported in this case. After the root canals were obturated with zinc oxide eugenol sealer, MTA was applied to the resorption cavity. The coronal cavity was then restored with a stainless steel crown. At an 18-month follow-up, the tooth was asymptomatic clinically and radiographically. According to this result, it can be concluded that MTA may be a suitable material for use in the treatment of internal resorption in the coronal third of the root canal in primary teeth.

Aluminum Compounds↗
PubMed1975

In vitro studies of bone resorption by the root-resorbing tissue from the bovine deciduous tooth.

Granulation tissue which is responsible for root resorption of deciduous tooth lies between root of the deciduous tooth and its permanent tooth germ. This tissue is called "root-resorbing tissue". Its bone-resorbing activity was investigated in vitro. Bovine root-resorbing tissue was cultured in close contact with 45Ca-labeled dead calvaria of rats. Bone-resorbing activity was determined by measuring 45Ca released from labeled calvaria during culture. It was found that only the root-resorbing tissue which was rich in odontoclasts and had a good blood supply in its surface layer had bone-resorbing ability, and that bone resorption occurred only when it was placed in close contact with calvarium. The root-resorbing tissue which was poor in odontoclasts and blood vessels failed to stimulate by 25-hydroxy-vitaim D3 or heparin, but not by larger amounts of parathyroid hormone, vitamin D3, and dihydrotachysterol when added to the culture.

Alveolar Process↗
PubMed1980

An electron microscopic study of attachments between periodontal fibers and bone during alveolar remodeling.

Three types of periodontal membrane-to-bone attachments are described for remodeling surfaces of the bony alveolar wall. An adhesive type, which is the most widespread means for tooth anchorage on resorptive bone surfaces during active tooth movements, involves the following histogenic steps: A layer of ground substance is first deposited by fibroblast-like cells on the naked surface of recently resorbed bone. As this continues, new precollagen and the dissociated ends of collagenous fibrils become embedded in the accumulating ground substance, and these fibrils in turn become joined to intact collagenous fibrils, blending with the remainder of the periodontal stroma. Such adhesive attachments continuously form and re-form as the resorption front proceeds. A continuous type of attachment also occurs on resorptive bone surfaces in which some (not all) bone matrix fibrils survive the resorptive process. These former bone fibrils become incorporated into the periodontal membrane and are continuous between the bone matrix and the stroma of the contiguous periodontal membrane. An intermediate type of attachment also occurs and is primarily an adhesive attachment that also contains a scattering of fibrils which are continuous from the bone matrix across the resorptive bone surface into the fibrous matrix of the periodontal membrane.

Alveolar Process↗
PubMed1987

Autotransplantation of teeth (I). Indications for transplantation with a follow-up of 51 cases.

The indications for autotransplantation of teeth in 45 patients have been analysed together with a follow-up of the success rate of surgery. Most of the transplants were mature teeth, 37 out of 51, with closed apex. The majority of transplantations were carried out in order to replace single tooth losses (40) but in 11 cases, the teeth were used as an abutment in prosthetic rehabilitation. In 14 cases, an impacted tooth was transplanted to its normal position. The follow-up ranged from 3 months up to 10 years. No progressive root resorption has been observed so far; only 6 cases with slight surface resorption. Clinical signs of anchylosis were noticed in 4 teeth and shallow bone defects in 6 patients. Small- or medium-sized periapical destructions were observed in 4 cases. Mature transplanted teeth were always subjected to endodontic therapy within a month; the immobilisation varied between 2-4 weeks, while trying to keep it as short as possible with maintained stability. The experiences so far achieved do encourage a more comprehensive use of the method to solve problems associated with oral rehabilitation, from both prosthodontic and orthodontic points of view.

Adolescent↗