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Biomedical subjects

C R Anderegg

Publications and source records attributed to C R Anderegg.

12 recordsLinked to original sources
PubMed2000

Retention of multi-rooted teeth with class III furcation lesions utilizing resins. Report of 17 cases.

BACKGROUND: Treatment of periodontally diseased multi-rooted posterior teeth has conventionally consisted of scaling and root planing, apically positioned flaps, tunneling, root amputation, root resection, guided tissue regeneration, osseous grafting, and combination osseous graft and barrier membrane techniques. Successful treatment has often been directed and measured by how well the clinician obtains sufficient access to facilitate patient hygiene efforts. Long-term success is predicated upon tooth retention and the arrest of further destruction within the furcation area. METHODS: Seventeen adult periodontal patients with Class III furcation defects were evaluated. Using an open flap procedure, a resin-ionomer was placed into all 3 furcation defects. The patients were placed on quarterly maintenance appointments and the teeth evaluated up to 1 year. RESULTS: The results revealed that sealing the furcations of multi-rooted teeth with hopeless prognoses seems to be a viable alternative to accessing the same intraradicular areas for maintenance using more conventional modes of therapy. Sealing further decreases the surface area of the furca and simplifies future maintenance. CONCLUSIONS: The present study showed that teeth with hopeless prognoses might be retained by decreasing probing depths, bleeding upon probing, and mobility when furcation areas are sealed with a resin-ionomer.

Adult↗
PubMed1999

A bioactive glass particulate in the treatment of molar furcation invasions.

BACKGROUND: Procedures for the treatment of molar furcation invasion defects range from open flap debridement, apically repositioned flap, hemisection, tunneling or extraction, to regenerative therapies. METHODS: The results of surgical therapy consisting of the clinical parameters of probing depth and bleeding on probing were compared in 15 patients with moderate to advanced adult periodontitis. Each patient received surgical therapy consisting of regenerative therapy using bioactive glass compared to open flap debridement alone in human mandibular molar furcation defects. RESULTS: The results of therapy were statistically significant in the defects treated with the bioactive glass. CONCLUSIONS: This study revealed the benefits of bioactive glass in the treatment of Class II furcation defects regarding the clinical parameters of probing depth reduction and the reduction in bleeding on probing.

Adult↗
PubMed1998

The treatment of class III maxillary furcations using a resin-ionomer. A case report.

This case report uses a resin-ionomer restoration as a barrier in the treatment of a Class III furcation defect. There was a reduction in tooth mobility and plaque count, no bleeding on probing, and a decrease in probing depth with the use of the resin ionomer. The study offers another treatment option in the treatment of a seemingly hopeless maxillary molar.

Aged↗
PubMed1996

Free gingival graft following biopsy: a case report of tissue management.

Excisional biopsies require wide margins to facilitate removal of diseased tissue. Such margins often result in soft-tissue defects. These defects can cause reduced esthetics, ineffective oral hygiene performance, and postsurgical root sensitivity. This case documents the combination of two dental procedures: biopsy and the free gingival graft. A pyogenic granuloma, as diagnosed by histologic report, was removed by excisional biopsy and the resultant defect repaired by using a free gingival graft. Palatal tissue was grafted immediately to the site of the biopsy and sutured in place to cover the loss of attached tissue and papilla. At 6 months, the graft appeared to restore gingival health and maintain both esthetics and function in the surgical biopsy site. The patient was well served by correcting the resultant biopsy defect in a one-step procedure which encouraged healing and an excellent esthetic result.

Adult↗
PubMed1995

Gingiva thickness in guided tissue regeneration and associated recession at facial furcation defects.

Consistently successful regenerative therapy for furcation defects using membrane techniques remains a challenge for clinicians. The purpose of this study was to determine if the thickness of tissue used to cover the membrane influences postsurgery recession. Thirty-seven (37) moderate to advanced adult periodontitis patients presenting with at least one mandibular or maxillary molar class 1 or 2 facial furcation involvement participated in the study. Mid-facial presurgery recession was recorded from the cemento-enamel junction to the free gingival margin at a reproducible point. Mid-facial tissue thickness was measured using calipers at a point 5 mm apical to the gingival margin of the mucogingival flap reflected at the time of guided tissue regeneration surgery. Patients were divided into 2 groups based upon tissue thickness measurement. Patients were then re-evaluated for recession at 6 months postsurgery. Sixteen (16) patients with tissue thickness < or = 1 mm demonstrated a mean 2.1 mm increase in recession, while 21 patients with tissue thickness > 1 mm exhibited a mean 0.6 mm increase in recession. We conclude that there is less post-treatment recession (P < 0.01) for tissue thickness > 1 mm than tissue thickness < or = 1 mm. Hence, thickness of gingival tissue covering a membrane appears to be a factor to consider if post-treatment recession is to be minimized or avoided.

Adult↗
PubMed1993

Treatment of the palato-gingival groove with guided tissue regeneration. Report of 10 cases.

The purpose of this study is to demonstrate the potential of using a barrier in the treatment of palato-gingival groove defects. The study group consisted of 10 patients. Prior to treatment, the palato-gingival groove on maxillary lateral incisors was measured with calibrated periodontal probe from the cemento-enamel junction (CEJ) to the free gingival margin (FGM) and from the FGM to the base of the pocket (BP). Probing depth (PD) was calculated and bleeding on probing indicated. Surgical procedures consisted of flap reflection, removal of granulation tissue, and scaling and root planning of the groove. An expanded polytetrafluoroethylene membrane was sutured over the palato-gingival groove. Six months postsurgery, all measurements were repeated. Statistical analysis compared results using means, standard deviations, and paired t tests. Results showed an improvement in clinical attachment gain, probing depth reduction, and decreased bleeding on probing. This study demonstrates the potential of guided tissue regeneration in the treatment of palato-gingival groove defects. A random blinded clinical trial is necessary, however, to fully assess the potential of this procedure in treatment of palato-gingival groove defects.

Adult↗
PubMed1992

Graphite tattoo: report of a case and differential diagnosis.

A case report underlining the necessity of the biopsy procedure for a pigmented lesion of unknown origin. A female patient was referred for evaluation of a pigmented lesion on the facial keratinized gingiva coronal to the free gingival margin above tooth No. 7. An excisional biopsy revealed a graphite tattoo. A discussion and differential diagnosis of pigmented lesions follows.

Adult↗
PubMed1991

Clinical evaluation of the use of decalcified freeze-dried bone allograft with guided tissue regeneration in the treatment of molar furcation invasions.

The purpose of this study is to evaluate the potential of decalcified freeze-dried bone allograft (DFDBA) combined with a barrier material in the treatment of human molar furcation defects (experimental) as compared to the barrier technique alone (control). Fifteen pairs of Class II or III furcation invasion defects comprised the study group. Measurements with calibrated periodontal probes were made to determine soft tissue recession, probing depth, and attachment levels. Defects from each pair were randomly selected to be treated with an expanded polytetrafluoroethylene membrane (e-PTFE) and DFDBA or the membrane alone. Additional measurements were made during surgery to determine crestal resorption, and vertical and horizontal open probing attachment. The membrane was removed 4 to 6 weeks post-insertion. Six months post-treatment, each site was surgically reentered and measurements repeated. Following either treatment, recession was minimal with statistically significant improvement in probing depth reduction and clinical attachment level gain favoring the combined technique. Hard tissue changes were comparable for alveolar crestal resorption, however, there was a distinct difference, statistically, for both horizontal and vertical bone repair favoring the use of the demineralized bone graft in combination with the e-PTFE membrane.

Bone Transplantation↗