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At least 397 records · Page 22Linked to original sources
PubMed1975

Comparison of apical sealing methods. A preliminary report.

A comparison of the seal provided by gutta-percha root canal filling, heat-sealed gutta-percha, retrograde amalgam filling, and retrograde Durelon filling was made by observation of dye penetration around the above filling materials in extracted teeth. A small but not significant difference between gutta-percha, heat-sealed gutta-percha, and retrograde amalgam was noted. Retrograde Durelon filling gave a poor seal in comparison to gutta-percha and retrograde amalgam filling, but the difference between it and the heat seal was not significant.

Apicoectomy↗
PubMed1975

Dens evaginatus in the Thai. An evaluation of fifty-one cases.

Dens evaginatus in the Thai had not been described previously. The incidence of this abnormality was found to be 1.01 per cent. The male to female ratio was 1:1.83, a figure which is comparable to findings among the Chinese, since the two groups are closely related. The evagination was observed in fifty-one patients, with 133 premolars and one molar being affected. Thirty-six premolar showed periapical pathosis which was classified into clinical and radiographic features. The frequency of affection of the different premolars was described, together with the histologic appearances of the anomaly. Pathogenesis of dens evaginatus in the Thai seems to be uniform, determined by racial and genetic factors.

Adolescent↗
PubMed1976

Sarcoidosis with mandibular involvement. Report of a case.

A case of mandibular involvement in sarcoidosis is presented. The diagnosis was based on positive chest roentgenograms, involvement of superficial and mediastinal lymph nodes of epithelioid tubercles, negative tuberculin test, and negative results of an examination with respect to tubercle bacilli. Mandibular involvement was diagnosed tentatively roentgenographically and verified by histopathologic examination. The mandibular lesion was treated surgically, and the defect healed uneventfully after less than 1 year. Almost complete normalization of the pulmonary lesions had taken place after 2 years.

Adult↗
PubMed1977

Microscopic study of the pulps of human teeth following vital root resection.

The effects of vital root resection upon the remaining pulp were studied in twenty-six periodontally involved human molars. The pulp was extirpated 14 days after the intervention. Granulomatous tissue present in the pulp chamber protruded from the site of the exposure as a polyp in eleven cases. Mild chronic inflammatory changes were present in the coronalmost part of the radicular pulp. The apical pulp was not affected at this time interval.

Adult↗
PubMed1977

Root amputation as a predictable procedure. Report of a case.

The diagnostic procedures required to arrive at an accurate treatment plan when one is confronted with severe periodontal and endodontic involvement in the same tooth are reviewed. A case report is presented, relating these techniques to the clinical situation. The clinical management of the "combined lesion," once the diagnosis and treatment plan have been determined, is described, with emphasis on methods which will improve the predictability of these difficult cases.

Apicoectomy↗
PubMed1980

The effect of root resection on the sealing property of root canal obturations.

Root canal systems of extracted anterior teeth were obturated with sealer and either multiple gutta-percha cones or single silver cones. The effect of root resection on the sealing property of these obturating materials was evaluated by autoradiographic methods. Results indicate that root resection with a rotary instrument in a high-speed handpiece does not adversely affect the sealing property of well-condensed gutta-percha-sealer obturations.

Apicoectomy↗
PubMed1982

The apical seal via the retrosurgical approach. I.A. preliminary study.

The results of this study indicated that heat-sealed gutta-percha alone and when reinforced with Adaptic or a glass ionomer cement provided the most effective apical seal. It is therefore proposed to expand this study to include these materials and zinc-free Spheraloy and Cupralloy amalgams as retrofilling materials. The amalgams will be used with and without cavity varnish.

Apicoectomy↗
PubMed1984

Endodontic treatment of a cementoblastoma.

The benign cementoblastoma (true cementoma, osteoblastoma, giant osteoid osteoma) appears to be a true neoplasm of functional cementoblasts which proliferate at the apex of teeth to form an expansile tumor. It remains intimately attached to the tooth roots and occasionally involves the root canals themselves. Although the pulpal tissue remains vital, treatment has historically consisted of extraction of the involved tooth along with extirpation of the tumor. This mode of therapy for the benign cementoblastoma should not be confused with the entity called periapical cemental dysplasia (that is cementoma, periapical osteofibroma or osteofibrosis, cementifying fibroma, localized fibro-osteoma, and periapical fibrous dysplasia). In this latter lesion the treatment consists of simply recognizing the condition and establishing a schedule for periodic evaluation of the patient. In the case presented here enucleation of the cementoblastoma and endodontic therapy were selected as treatment modalities, despite the presence of buccal and lingual expansion of the cortical plates. There has been no recurrence of this growth during the 4-year follow-up period.

Adult↗
PubMed1985

Intentional vital root transection: a 52-week histopathologic study in Macaca mulatta.

Past studies dealing with the vascular supply to surgically mobilized dentoalveolar segments have mentioned occasional encounters with vital root transection and have noted varying degrees of pulpal response to this insult. The purpose of this investigation was to observe the pulpal and periapical responses of monkey dental tissues to intentional vital root transection over a 1-year postoperative period. Four adult Macaca mulatta monkeys were used in this study. All roots were surgically transected within the apical third with a bur. Maxillary and mandibular quadrants for 1, 2, 3, 4, 6, 12, 24, and 52 weeks following surgery were obtained after the animals were killed by perfusion of the left ventricle. The tissue blocks were prepared by routine histologic methods. The results demonstrated a disruption of the normal pulpal architecture, with initial pulpal degeneration and subsequent early replacement by the periodontal ligament tissue. A cellular cemental lining of the root canal occurred in all specimens. The periodontal ligament-like tissue continued to deposit cementum, resulting in almost total obliteration of the root canal and pulp chamber and leaving an intact but much reduced blood supply to the pulp chamber containing periodontal tissues.

Animals↗