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Results for “Apicoectomy”

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At least 19 recordsLinked to original sources
PubMed1991

Bony lid approach for apicoectomy of mandibular molars.

Apicoectomy in the lower molar region is indicated in many instances to avoid the need for prosthetic appliances. Nevertheless it is a method sometimes rejected by oral surgeons because of the thickness of the buccal compact bone in the lower molar area leading to extensive bone loss in addition to a restriction of vision and access during the operation. The present study reports twenty-four cases of apicoectomized mandibular molars treated with the bony lid approach which facilitates considerably the apicoectomy procedure. Once part of the buccal compact bone in the periapical area of the molars is removed, favourable conditions are created for the completion of the operation under direct vision of the operational field. The replacement of the buccal compact bone then minimizes the dimensions of the remaining bone cavity.

Alveolectomy↗
PubMed1979

Gutta-percha points of apicoectomy. To push or to pull?

A gutta-percha root-filling point placed during apicoectomy may be condensed by the application of pressure to its coronal end or tension to its apical end. Scanning electron microscopy clearly demonstrates the effect that these techniques have on the adaptation of the root filling to the canal. The pressure method would appear to produce the more satisfactory result.

Apicoectomy↗
PubMed1992

Effects of Nd:YAG laser on apical seal of teeth after apicoectomy and retrofill.

The application of Nd:YAG laser to tooth surface can change its surface permeability. The purpose of this study was to investigate the effects of Nd:YAG laser on the permeability of dentin following apicoectomy and retrofill. Sixty single-rooted teeth were randomly assigned to six groups of 10 teeth each. The six groups were arranged in three pairs, experimental and control groups. The canals of teeth in pairs 1 and 2 were cleaned, shaped, obturated, and their apical 2 mm were resected. A class I preparation was prepared and filled with amalgam in each tooth in pair 1. The apical 2 mm of each tooth in pair 3 was removed, and a class I preparation was prepared and filled with amalgam. The apical surface of resected roots in half of the samples in each pair was lased twice by using Nd:YAG laser. The duration of lasing and the number of pulses were recorded for each tooth. After application of nail polish to the unoperated surface of each tooth, the teeth were placed in 0.5% methylene blue dye for 48 h. The amount of dye penetration in sagittal sections of each tooth was measured. The amount of dye penetration was significantly lower in lased roots than in nonlased ones (p < 0.05). Based on our results, it appears that application of Nd:YAG laser reduces the permeability of resected roots.

Analysis of Variance↗
PubMed1991

An analysis of success and failure of apicoectomies.

The radiographs from 715 patient charts were analyzed to study the effect of 11 factors on the success and failure of apicoectomies. Of these, 424 had recall radiographs of 6 months or more and were evaluated for changes in radiolucencies. The data were analyzed by cross-tabulation and chi-square analysis for significant relationships. Complete healing was found in 65% of the recall cases, while incomplete and unsatisfactory healing occurred in 29.4% and 5.6% of the cases, respectively. Complete healing was found to increase with patient age. Those over 60 yr of age had the highest percentage of complete healing. No statistical difference in healing was found between maxillary and mandibular teeth. Also, postsurgical healing associated with those teeth which were inadequately obturated with gutta-percha, silver points, or paste-filling materials did not differ significantly. No significant difference in healing was found between the teeth that were retreated nonsurgically before surgery and those that were not. Healing was independent of the placement of a retrofilling as well as the type of retrofilling period. Significantly better healing was seen with teeth that were permanently restored following surgery.

Adolescent↗
PubMed1975

Oral surgery in general dental practice. Apicoectomy.

Apicoectomy is a frequently performed operation. In order to produce consistently good results the operation and its varieties are described, with stress being placed on correct assessment of each case prior to surgery.

Anesthesia, Dental↗
PubMed1978

Scanning electron microscopic examination of root after apicoectomy.

The scanning electron microscope was used to examine resected areas of eight roots of human teeth extracted after long intervals following surgical procedures. Some resorption lacunae were observed in the areas with protuberances of newly formed cementum. In the lacunae, honeycomb-like structures were found. On the resected surface, residues of ligaments and periodontal fibers, and in one of the specimens dentinal tubules with odontoblastic processes protruding above the surface were present.

Apicoectomy↗
PubMed1975

[Apicoectomy and focal diseases].

The so-called focal infections are today considered to be polyetiologic manifestations, in which there is a summation of various aggressions. Bacterial products, toxic or antigenic substances originating from different foci are but one of the elements susceptible of unleashing the disease. This explains why there are so many foci and so few results after their elimination. Scientific evidence shows that the histologic result of an apicectomy is considerably worse than the radiological evidence might lead to believe. Inflammation may persist for years before it disappears. Radiographs are therefore only a coarse criterion for judging results of healing. When facing a disease caused by focal infection, the possible foci should be eliminated quickly and as radically as possible.

Apicoectomy↗
PubMed1991

[Results after insertion of apical titanium cones in apicoectomy].

In a post-treatment study 50 apicoectomized teeth in 34 patients being treated with apical titanium cones between 1988 and 1990 were registered. After a mean postoperative observation period of 15.3 months, 42 teeth were still in situ and subjected to clinical and radiographical evaluations. Their mobility was measured by the periotest method. A resulting 84% success rate demonstrates the technique to be suitable to safeguard a prolonged lifetime of severe damaged teeth by use of conical pins which guarantee a perfect closing at neoapex.

Adolescent↗