Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “APICOECTOMY”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 487 records · Page 27Linked to original sources
PubMed1996

Evaluation of cracks associated with ultrasonic root-end preparation.

The purpose of this study was to evaluate the integrity of resected root-end surfaces of extracted human teeth after using ultrasonic tips at low or high frequencies for root-end preparation. Thirty bilaterally matched pairs of single-rooted human teeth had root-end resections using a low-speed diamond saw and were examined for root-end cracks. The matched pairs of teeth were then divided into two experimental groups, with one member of each pair being placed in each group. In group 1, root-end preparations were made with an ultrasonic tip on the lowest frequency setting. The preparations in group 2 were done on the highest power setting. Two investigators again examined the resected root-ends using a stereomicroscope at x20 to x63 and recorded the numbers, types, and location of the cracks. Three types of cracks were observed: canal cracks, intradentin cracks, and cemental cracks. There were significantly more root-ends with cracks after ultrasonic root-end preparation than after root-end resection only. In root-ends that had any cracks, significantly more canal cracks per root occurred when the ultrasonic tip was used on the high-frequency setting for root-end preparation than when the ultrasonic tip was used on the low power setting.

Apicoectomy↗
PubMed1996

Breakage of ultrasonic root-end preparation tips.

Modified ultrasonic tips are used to prepare rootend cavities during endodontic surgery. The purpose of this study was to determine whether such tips are prone to breakage during use. Ten different tip designs were driven by an ultrasonic unit at maximum power. Multirooted teeth were instrumented, the apex removed, and the tooth was placed horizontally on a pan balance. The apex was instrumented by each ultrasonic tip in turn for 15 min, with the load being increased by 100 g every 5 min. Those tips with curvatures of 70 degrees or greater fractured within the first 5-min loading period. Breakage occurred approximately 2 to 3 mm from the end and always at a bend. Scanning electron microscopy revealed that the fractures were brittle in nature, with little change in the remaining section. Two tips bent: one isthmus preparation tip and one silver point removal tip. All the other designs were deemed satisfactory after experimentation. This study shows that fracture of ultrasonic tips can occur and is related to the degree of bending.

Apicoectomy↗
PubMed1996

Use of a bioresorbable guided tissue membrane at an adjunct to bony regeneration in cases requiring endodontic surgical intervention.

The use of guided tissue regeneration membrane in the treatment of advanced bony lesion case management is at hand, allowing the endodontist an additional adjunctive tool to treat an isolated bony defect with enhanced expectation of clinical regeneration of bone in the healing process. The introduction of a resorbable membrane should allow for wider use by endodontists in those indicated cases that come under our management. Two such cases are presented.

Aged↗
PubMed1997

In vitro evaluation of effects of ultrasonic root-end preparation on resected root surfaces.

This in vitro study investigated structural alterations in resected roots that had root-end preparations made with a conventional microhead handpiece and ultrasonics at two intensity levels. Root ends were examined with fluorescence confocal microscopy. Serial histologic sections to the 2 mm levels and then at the level of 3 mm and 4 mm from the resected surface were examined. Statistical analysis of the confocal data indicated no significant difference between the groups in the number and length of the fractures. Results of the histologic data indicated that root ends prepared by ultrasonics had a statistically greater number of fractures than both the control and the conventionally prepared groups. The latter did not differ significantly from each other.

Apicoectomy↗
PubMed1999

A scanning electron microscopic study of in vivo ultrasonic root-end preparations.

The purpose of this in vivo study was to evaluate root-ends for cracks after root resection and again after ultrasonic root-end preparation in patients undergoing endodontic surgery. Endodontic surgery was performed on 25 roots from 20 patients. In vivo vinyl polysiloxane impressions were made after root resection and again after ultrasonic root-end preparations. Epoxy resin casts were made from the impressions and scanning electron micrographic examination of the root-end replicas was performed. There was no evidence of cracks after root resection. One incomplete canal crack was evident after ultrasonic root-end preparation.

Apicoectomy↗
PubMed1999

Histological study of periapical tissue healing in the rat molar after retrofilling with various materials.

We histologically examined the effects on the periapical tissue of various dental filling materials applied as retrofillings in rats and compared them with those of amalgam. The 4-META-TBB resin Superbond and the light-cured composite resin produced the least severe inflammatory reaction, with the greatest amount of new bone. In these specimens, regeneration of a part of the periodontal ligament was also observed. These results indicate that these materials might be very biocompatible and thus foster the natural regeneration of the periapical tissue.

Animals↗
PubMed1996

Are postoperative review appointments necessary following uncomplicated minor oral surgery?

This paper reports the results of a postal survey of all current BAOMS Fellows concerning their practice and opinion on the usefulness and desirability of reviewing all patients following uncomplicated minor oral surgery. It also reports the results of a separate postal survey of 500 patients who had recently undergone third molar removal. The overwhelming majority of Fellows routinely review all their patients following third molar removal and apicectomy but not after simple exodontia. There was no excess morbidity in patients who were not offered a follow-up appointment compared to those who had been seen postoperatively after removal of their third molars. Patients not followed up in hospital postoperatively did not seek help from their doctor or dentist more frequently than patients who were followed-up. Despite the lack of evidence showing objective benefit to patients from postoperative follow-up, given the choice the majority of patients wish to be reviewed postoperatively.

Anesthesia, Dental↗
PubMed1996

Ultrasonic root-end preparation: clinical and radiographic evaluation of results.

PURPOSE: This study evaluated the results of periradicular surgery performed using ultrasonic root-end preparation. PATIENTS AND METHODS: The course of healing during observation periods ranging from 6 months to 3 years was examined in 157 teeth. RESULTS: One hundred forty-five teeth were successfully treated, for a success rate of 92.4%. CONCLUSION: It was concluded that the ultrasonic root-end preparation technique for periradicular surgery is a simple procedure that provides excellent results.

Adolescent↗