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At least 19 recordsLinked to original sources
PubMed1995

[Advantages of microsurgical apicoectomy and retro-preparation with ultrasound compared with current apicoectomy].

From September 1992 to March 1994 at the Department of Oral Surgery of the Dental School of the University of Vienna a total of 218 microsurgical apicoectomies and ultrasonic retro-preparations were carried out in 142 patients. Among other indications for operation was the failure of previous surgical-endodontic procedures in 62 cases. In 51 teeth (82%) of these patients the cause of failure could be evaluated with the help of the microscope. Twelve teeth (19%) extracted afterwards showed a longitudinal root fracture which had not been diagnosed before. In all other teeth retro-preparation and filling with zincoxide-eugenol cement was possible, even in cases of difficult anatomic approach. Due to the excellent experiences with microsurgical technique in apicoectomies, the use of the microscope in other fields of dental surgery remains only a matter of time.

Adult↗
PubMed1995

[Clinical and roentgenologic outcome evaluation after apicoectomy with zirconium oxide ceramic pins--a prospective study of 112 apicoectomy teeth].

We post-examined 112 apicectomies in 93 patients after an average placement period of 4.8 months (3-15.3 months) both clinically and radiologically in a prospective study to evaluate the security of success using zirconoxide ceramic pins. Clinical functioning was examined by means of the clinical mobility test, the periotest method, the sulcusfluidflowrate (periotrontest), measurements of the depths of parodontal pockets at 6 points and the papillary bleeding index in comparison to the contralateral comparative tooth. To assess the osseous regeneration of the resection defect, we carried out planimetric evaluations of standardized X-ray tooth film exposures during surgery as well as at the post-examination. The resected teeth revealed an average loosening of 10.2 in periotest. The sulcusfluidflowrate came to an average of 26.1 (control group: 22.7); the parodontal pockets were an average of 0.2 mm deeper than those of the control teeth. After 4.8 months, 63.54% of the resection defect showed complete osseous regeneration. Considering the clinical and the radiological criteria, the rate of success was 85%. Clinical use of zirconoxide ceramic pins is recommended. The high radiolucency of zirconoxide ceramics permits a safe assessment of the osseous regeneration and therefore a safe assessment of resection success.

Adolescent↗
PubMed1999

[A clinical study on treatment results of apicoectomy].

In this study, the treatment results of apicoectomy with orthograde filling were compared with those of apicoectomy with retrograde gutta-percha filling and retrograde sponge gold filling. The long-term follow-up results of the teeth treated by apicoectomy are presented, and the possible prognostic factors are discussed. The healing process of the apical bone cavity was analyzed with standard X-ray techniques and image analysis system. One hundred nineteen teeth were apicoectomized with orthograde filling, 196 teeth with retrograde gutta-percha root filling and 42 teeth with sponge gold filling. There was no significant correlation between the treatment results and the sex or age of the patients, kinds of teeth, preoperative radiolucent areas, the number of operations or histopathological diagnosis of apical lesion. The success rate of apicoectomy with orthograde filling or apicoectomy with retrograde gutta-percha root filling was significantly higher than that with retrograde sponge gold filling. The filling materials and the operation method were considered to be the most important factors for a successful outcome. Bone reconstruction was found to start from the periphery of the bone cavity and the bone defect became gradually reduced in a star-like pattern. At 4 months after operation, in the successful cases, the area of bone cavity decreased 46-64% compared with before operation, but in the unsuccessful cases, the area did not change or increased 75-120%. Thus at 4 months after operation, it is possible to determine whether or not apicoectomy is successful.

Adolescent↗
PubMed1997

A microbiological study of pre- and postoperative apicoectomy sites.

There is little information on the microbiology of periapical lesions, and no data on the residual microbial flora in the periapex, if any, after apicoectomy procedures. Hence, 64 patients treated by apicoectomy procedures were prospectively studied to assess the bacterial flora in the periapex and to evaluate the residual bacteria in postoperative apicoectomy sites. Of the 64 lesions studied, 14 (22%) were sterile and 50 (78%) yielded bacteria preoperatively. Bacteria could be recovered from 28 (56%) of the latter lesions after apicoectomy and curettage. A total of 105 bacterial strains was isolated from 50 lesions, yielding a range of 1-4 (mean 2.1) species per sample. The isolates comprised 84 (80%) facultative anaerobes and 21 (20%) strict anaerobes. A polymicrobial growth was obtained from 39 lesions whilst 11 lesions yielded pure cultures. On detailed microbiological analyses of 29 lesions, 40% of the isolates were identified as alpha-haemolytic streptococci, half of which were Streptococcus sanguis; anaerobic streptococci were the predominant anaerobes. None of the organisms or group(s) of organisms emerged as recalcitrant colonisers which were difficult to dislodge after surgical debridement. These data indicate that the majority of periapical lesions harbour a variety of flora which cannot be eradicated despite thorough apicoectomy procedures.

Actinomyces↗
PubMed1999

Complications after apicoectomy in maxillary premolar and molar teeth.

This study was designed to enumerate the number of perforations to the maxillary sinus while performing apicoectomy on maxillary premolar and molar teeth and to evaluate possible complications as a result of these perforations. A total of 472 apicoectomies were performed in 440 patients; perforations occurred in 10.4% of teeth, 23% in molars, 13% in second premolars and 2% in first premolars. No cases of acute or chronic sinusitis were recorded. It was concluded that apicoectomy, carried out using a meticulous surgical technique and proper postoperative care, should be considered as a treatment option before contemplating extraction.

Apicoectomy↗
PubMed2003

[Root-end filling materials in apicoectomy--a review].

An integral component of apicoectomy procedure is the placement of a root end filling material. In this 20 years literature review we identified at least 19 different materials that have been used as root end filling materials. Unfortunately, the ideal material for this purpose is yet to be found. Amalgam is the most frequently used material in apicoectomy procedure and can lead to satisfying results in many cases. IRM, super EBA and MTA are more suitable materials, and give better results in apicoectomy procedures than Amalgam. IRM and super EBA are both ZOE cements. Super EBA is less cytotoxic than IRM, suggesting that the decreased eugenol in Super EBA allows it to be less irritating. MTA gives better results when tested for leakage and biocompatibility than IRM and Super EBA, and has the ability of induction of hard tissue. A possible disadvantage that prevents MTA from being acceptable as "the ideal root-end filling material" is a long setting time that may lead to dislodgment or deformation from root end preparation. Yet, in most cases MTA serves as the best choice for a root end filling material.

Apicoectomy↗
PubMed1994

Apicoectomy and retroseal procedures for anterior teeth.

Thirty-five years ago, the terms apicoectomy, semilunar flap, and failure characterized the scope of endodontic surgery. During the intervening years, basic research and clinical experience have catapaulted this area of dentistry to a level of refinement at which consistent long-term success is virtually assured. In summary, it is important to recall the principles of endodontic surgery that dictate treatment. The most important include the following: (1) The semilunar flap must be disregarded; (2) an "apicoectomy" is virtually never definitive treatment and referring to endodontic surgery as an "apicoectomy" should be discouraged; (3) careful considerations must be paid to all factors governing flap design. Finally, it must be realized that although periapical surgery has become a far more predictable treatment, it still is not a substitute for conventional endodontics, except in very rare situations.

Apicoectomy↗
PubMed1989

Apicoectomy with retrograde gutta-percha root filling.

Sixty-four teeth were treated by means of apicoectomy with retrograde gutta-percha filling with the use of new instruments that we devised. The new instruments consisted of a biangle explorer, angle reamers, and angle files. Operations with this technique showed a success rate of 95.3% (61/64 teeth). We conclude that our technique for apicoectomy with retrograde gutta-percha filling is not only simple in procedure, but also shows excellent results.

Adolescent↗
PubMed1997

Clinical application of the erbium:YAG laser for apicoectomy.

Recently, an Er:YAG laser has attracted attention because of the possibility of cutting hard tissues with extremely small thermal effects. In this article, we report 8 cases (13 teeth) of apicoectomy using Er:YAG laser. All procedures were performed without using an air turbine or an electric drill. Although the cutting speed of this laser was slightly slower than ordinary methods, its clinical application for apicoectomy has many advantages including absence of discomfort and vibration, less chance for contamination of the surgical site, and reduced risk of trauma to adjacent tissue.

Apicoectomy↗
PubMed1983

Apicoectomy on molars: a clinical and radiographical study.

Apicoectomies on molars are not performed frequently, although their success rate can reach that obtained by apicoectomies on front teeth and premolars. 86 patients were operated on between January 1976 and December 1980 at St. Radboud Hospital. Clinical and radiological re-examination could be carried out on 70 of them. In 73% of the cases, healing was complete, in 21% incomplete, and in 6% the teeth were extracted. Certain factors which possibly influenced healing and the methods of root filling are discussed.

Adolescent↗
PubMed1997

The carbon dioxide laser as an aid in apicoectomy: an in vitro study.

OBJECTIVE: To achieve the required goal of optimally sealing the apical section and the root-canal when performing an apicoectomy, the authors decided to use the CO2 laser as an additional aid. SUMMARY BACKGROUND DATA: The CO2 laser has previously shown to have an excellent sealing effect on dentin surfaces. METHODS: In this in vitro study, the authors examined the effects of CO2 laser application in apicoectomies with the help of color penetration tests and scanning electron microscopic (SEM) examinations. Sections and root canals were irradiated with low power (0.5 W) in continuous wave mode for totally 20 sec. The thermal stress for the adjacent tissues attaching thereto is moderate as shown by infrared-spectroscopy. RESULTS: A comparison with nonirradiated samples revealed that CO2 laser irradiation reduced color penetration at the section to a minimum. Also, irradiation of the root-canal wall resulted in satisfactory sealing of the surface. These findings were supported by the results of the SEM examinations. CONCLUSIONS: CO2 laser treatment optimally prepares the tooth for final intraoperative filling because of sealing of the dentinal tubules, the resultant elimination of niches for bacteria and the sterilizing effect of the laser.

Apicoectomy↗
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↗
PubMedDate not supplied

[Apicoectomy performed after supervoltage radiotherapy in the region of oral cavity and neck: case report].

The author describes a case of apicoectomy of the lower canine in a patient who was previously exposed to supervoltage radiotherapy in the oral cavity and neck regions. After the comment on the uneventful postoperative course and the absence of complications one year and a half later, the author points out that apicoectomy should be taken into account when dental care of irradiated patients was planned.

Apicoectomy↗
PubMed1993

A comparison of dentin permeability after bur and laser apicoectomies.

This investigation compared the permeability of dentinal tubules after laser beam and conventional bur apicoectomies. Twenty roots were rountinely instrumented and obturated with laterally condensed gutta-percha. A bur was used to cut the apexes of 10 teeth, while the remaining 10 were cut with a laser beam carried through an optic fiber. A 35-W pulsed Nd:YAG laser system capable of cooling the irradiated area with an air and water spray supplied the power. Except for the apex, the teeth surfaces were coated with a blue wax. The samples were stored for 36 hours in a 2.5% methylene blue solution and were washed, split, and measured for dye penetration. Linear penetration in series 1 averaged 2.4 mm, while series 2 measured 0.9 mm. The laser apicoectomy appears to reduce the permeability of dentinal tubules.

Apicoectomy↗
PubMed1996

Apicoectomy on an incisor tooth of a Victorian koala (Phascolarctos cinereus victor).

An eight-year-old Victorian koala was presented with a discharging mandibular sinus of at least one month duration. On examination, a dental abscess of the right mandibular incisor tooth was found. During the course of endodontic treatment, a size 2 Gates Glidden bur separated from the shank and was lodged in the canal. Due to the anatomy of the tooth the bur could not be removed and an apicoectomy was performed. Following the apicoectomy (follow-up period two years), the periapical pathology resolved.

Abscess↗
PubMed2001

Efficacy of enamel matrix proteins on apical periodontal regeneration after experimental apicoectomy in dogs.

Adult dogs have a complex apical delta structure in all root apexes of teeth. This complex structure may affect the formation of apical lesions in the teeth such as apical abscesses. The purpose of this study was to evaluate the efficacy of enamel matrix protein (EMP) which was used for periodontal regeneration therapy after an experimental apicoectomy for an assumed apical lesions of the teeth in dogs. The maxillar canine roots and maxillar fourth premolar buccal mesial roots in five beagles were experimentally apicoectomized under general inhalation anesthesia. After the root apex was exposed and excised, EMP was applied on the surface of the exposed dentin. After 12 weeks, dogs were euthanized. and the experimental teeth together with the surrounding soft and hard periodontal tissues were collected for histological evaluation under a light microscope. In the EMP group, the size of the defect where the root apex was removed was smaller than that of the control group. New cementum was dominantly achieved in the EMP group compared to the control group. Furthermore, new collagen fibers that bridged area between the new cementum and new alveolar bone were detected only in the EMP group. The present results demonstrated marked apical periodontal regeneration after apicoectomy in the EMP group. These results, therefore, suggest that the application of EMP can effectively induce the regeneration of periodontal strUctures in apicoectomized dogs.

Animals↗
PubMed2000

[The preparation of retrocavities in apicoectomies].

The purpose of this in vitro and in vivo study was to compare the quality of retrograde cavities and retrofilling using various retrograde techniques (microhead, ultrasonic). The quality was evaluated on the basis of dye penetration, macroscopic control, and both light microscopic and scanning electron microscopic examination. A total of 40 extracted teeth with a single canal were analyzed. The clinical result was evaluated in 25 patients with root-filled teeth and the indication of apicoectomy. Statistical analysis indicated that the seal was significantly better with ultrasonically prepared cavities than with microhead preparation. Retrofillings prepared ultrasonically also showed significantly fewer peripheral fissures. The scanning electron microscopic examination, however, demonstrated peripheral fissures in all filled teeth. Furthermore, the cavities prepared ultrasonically had a smoother surface and a lower smear layer. This preparation produced a more pleasing final result. The advantages of better accessibility during the preparation, namely, more precise preparation of the retrofilling and only minor substance loss were confirmed clinically. Using the ultrasonic equipment, absolutely sterile working conditions are present.

Apicoectomy↗