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At least 541 records · Page 30Linked to original sources
PubMed1995

Use of a resin-ionomer in guided tissue regeneration: case reports.

The cases presented in this report illustrate: (1) the potential for a fluoride-releasing resin-ionomer (Geristore) to be used as a sealant between an e-PTFE membrane (Gore-Tex) and tooth structure during a guided tissue regeneration, and (2) the potential for a resin-ionomer to function as a barrier in guided tissue regeneration. In the first case, the e-PTFE membrane was trimmed to only cover the area to be treated prior to its placement over the lesion. The resin-ionomer was mixed following manufacturers specifications, placed on four corners of the pre-trimmed membrane and luted into place. In the second case, the resin-ionomer alone was placed over the lesion, teased off the lesion with a curette while in a semi-set state, and luted into place with freshly mixed material after it set completely. These cases provide preliminary clinical evidence that a resin-ionomer may be used subgingivally for guided tissue regeneration.

Adult↗
PubMed1996

[The study of molar furcation involvements in adult periodontitis. II. Age, sex, location and prevalence].

The purposes of the study were as follows: (1) to evaluate the molar furcation involvement and number of molar correlated with age and sex; and (2) to study the relationship between the means of alveolar bone loss and associated factors of molar furcation involvements (FIs). 1102 molars (703 males and 399 females) were measured in 219 individuals (136 males and 83 females) for the alveolar bone loss and associated factors of molar furcation involvements. Based on the results, we conclude the following: (1) the higher prevalence of FI was in the mandibular first molar (94.6%), whereas the lowest prevalence of FI was in maxillary second molar; (2) except for the mandibular first molar, the prevalence of molar FI markedly increased with an increased age group (16 & 26, r = 0.335, p < 0.01; 17 & 27, r = 0.345, p < 0.01; 37 & 47, r = 0.239, p < 0.01); (3) the prevalence of molar FI was significantly higher in males than in females (p < 0.05); (4) the mean number of molar FI was significant greater in males (mean = 3.45) than in females (mean = 2.69); (5) factors such as age (r = 0.222, p < 0.01), sex, (r = 0.145, p < 0.05), number of remaining teeth (r = -0.330, p < 0.01) and molar FI (r = 0.471, p < 0.01) are strongly associated with the mean alveolar bone loss of molars.

Adult↗
PubMed1996

Orthodontic procedures improving periodontal prognosis.

The wide range of interrelations between orthodontics and periodontology shows that besides the preventive significance in the mixed dentition, another focal point is the comprehensive rehabilitation of periodontally affected patients. With increasing experience in the field of adult orthodontics, setting therapeutic limits becomes increasingly difficult. It is impossible in principle to define in exact metric terms the probing depth or attachment loss up to which orthodontic tooth movement is feasible. The fact is rather that the orthodontic-periodontal treatment goal can be defined only after evaluation in each individual finding a number of different factors: esthetics, function, risks of orthodontic tooth movement, biomechanical considerations, and periodontal prognosis.

Adolescent↗
PubMed1994

Cervical enamel projection related to furcation involvement.

Reviewing the literature the authors show the importance of cervical enamel projections (CEP) in the involvement of molar furcation. The dento-gingival relationship of CEP structure is peculiar for not having connective attachment but only long junctional epithelium. In numerous studies, most mandibular and maxillary molars presented CEP, mainly of little extension, with an incidence ranging from 8.8 to 87.4%. The studies showed a relationship between cervical enamel projection and the presence of inflammatory periodontal disease, and furcation involvement of molars. These data suggest that a detailed clinical trial must be carried out as well as early diagnosis of periodontal disease at the region of furcation.

Dental Enamel↗
PubMed1996

Intentional replantation for iatrogenic perforation of the furcation: a case report.

Intentional replantation is an accepted endodontic procedure for treatment of teeth in which conventional surgical endodontic treatment is contraindicated. This article presents a rare case of intentional replantation of a mandibular molar that had severe periodontal destruction resulting from iatrogenic perforation of the furcation. A 17-month follow-up evaluation revealed an asymptomatic and functional tooth with no radiographic signs of pathosis. The favorable results obtained might be attributed to the preservation of the vitality of the periodontal ligament; the absence of damaging pressure during extraction; the minimal extraoral treatment time; the use of nonrigid splinting; and the immediate repair of the perforation during a one-visit endodontic procedure. The results obtained with this tooth may indicate the possibility of a successful surgical technique for this otherwise hopeless complication of endodontic therapy.

Adult↗
PubMed1997

Clinical and laboratory evaluation of powered electric toothbrushes: comparative efficacy of two powered brushing instruments in furcations and interproximal areas.

The purpose of this study was to compare the efficacy of two powered brushing instruments (Rota-dent, Pro-Dentec Inc. and Interplak, Bausch and Lomb Inc.) for control of plaque and gingivitis in interproximal spaces and furcations. Thirty-five patients, randomly selected from a pool of post-active therapy, periodontal surgical cases, completed this study. A split-mouth design was utilized in this twelve-week trial with each patient acting as his/her own control. Subjects alternately brushed one-half of their mouths with each of the instruments: a crossover in the brushing pattern occurred at six weeks. Single-blind clinical assessments were made by a calibrated investigator at baseline, six and twelve weeks. Gingival Index (GI), Plaque Index (PI) and Papillary Bleeding Index (PBI) were determined in interproximal and furcation areas. Mean percent reductions from baseline for GI, PI and PBI at the end of twelve weeks were 72%, 61% and 70%, respectively for the Rota-dent, and 46%, 43% and 27%, respectively for the Interplak. One-way analyses of variance (ANOVA) and co-variance (ANCOVA) indicate that the Rota-dent was significantly more effective (p < 0.001) than the Interplak in controlling plaque and gingivitis in furcation and interproximal areas with clinically relevant differences in all indices measured.

Adult↗
PubMedDate not supplied

Cross-infection from periodontitis sites to failing implant sites in the same mouth.

Twenty-five tooth and implant sites in nine patients were investigated for the presence of putative periodontopathic organisms, using specific DNA probes for Actinobacillus actinomycetemcomitans, Porphromonas gingivalis, Prevotella intermedia, Eikenella corrodens, Fusobacterium nucleatum, Treponema denticola, and Campylobacter recta. Five of nine patients showed a likelihood of transmission from tooth to implant sites. These patients also showed a high number of putative periodontopathic organisms present in the tooth sites tested. A significant risk was found of transmitting putative periodontopathic organisms from periodontitis sites to implant sites in the same mouth. An appropriate clinical protocol needs to be developed to address this issue.

Aggregatibacter actinomycetemcomitans↗
PubMed1997

The overall significance of regenerative procedures in the treatment of furcations.

A retrospective study examined the frequency of a feasible or remotely possible indication for regenerative therapy of furcation involvement in a large group of periodontally diseased patients. The judgment about the feasibility of the indication was mainly based on results of current randomized controlled clinical trials with regard to tooth type and location of the furcation lesion. Data from 558 patients treated by two periodontists, one experienced and one in training, were analyzed. Furcation involvement of at least one multirooted tooth was found in 40% and 63% of the two dentists' patients. In only 20% and 27% of their patients was there a potential indication for regenerative furcation treatment. Of 1,134 furcation lesions, 180 (15.9%) were conceivably suitable for this procedure. Only 17 sites with a feasible or remotely possible indication were treated in that way. In most cases, conventional furcational treatment (flap surgery with scaling and root planing) was performed.

Adolescent↗
PubMed1997

Bone support as per cent of tooth length. A methodological study.

A technique is presented for calculating the amount of bone support as a percentage of the total tooth length measured on intra oral x-ray pictures. An evaluation was made of differences in total tooth length of 1128 teeth recorded in 1979 and in 1989. The differences found in the ten year period were minimal (0.3%). Between 1979 and 1989 0.7% or 2 mm of the bone support was lost. The accuracy obtainable by the use of measurements from x-ray pictures taken by trained personnel was found to be satisfactory. This indicate that the method could be of value for comparison of changes in mesial and distal bone support over a period of time. The advantages of using bone support measurements instead of attachment level measurements are several: ease of reevaluation of initial values, the patient does not have to be present the whole time, and properly trained dental assistants can make the measurements.

Adult↗
PubMed1996

Frequency of furcation closure with regenerative periodontal therapy.

A review of the literature was performed related to the frequency of closure of Grade II furcations with various regenerative therapies such as bone replacement grafts (BRG), coronally positioned flaps (CPF), guided tissue regeneration barriers (GTR), or open flap debridement (OFD). Fifty papers involving 1,016 furcations were evaluated. Complete furcation closure was reported only 20% of the time. Clinical change from Grade II to Grade I (partial furcation fill) was found in an additional 33% of the cases. Therefore, general improvement in clinical furcation status has been reported only about 50% of the time. The most effective furcation regenerative therapy was the combination of GTR plus BRG (91% overall positive). Similar overall positive results (88%) were achieved with nondemineralized allogeneic freeze-dried bone plus tetracycline without a barrier. The least effective therapy for regeneration in furcations was OFD (2% complete furcation closures and 13% partial furcation closures). If complete furcation closure is a primary goal of regenerative therapy, that goal would not appear to be commonly met.

Bone Substitutes↗
PubMed1997

The diamond-coated sonic scaler tip. Part I: Oscillation pattern of different sonic scaler inserts.

The authors have developed a set of four modified sonic scaler inserts with variously shaped shafts and diamond-coated budded inserts. The inserts are specially designed for the furcation area since instruments used hitherto have not been successful in completely preventing slow continuous periodontal breakdown in multirooted teeth. To test their clinical effectiveness, the displacement amplitude of the different sonic scalers was measured under varying load applications. Each scaler insert generated different and characteristic displacement amplitudes from rest position. The conventional insert was continuously dampened under increasing load application, whereas the diamond-coated inserts showed only minor variations of oscillation pattern. In a clinical situation, both insert types should be used, with the least possible application load to maintain effectiveness and minimize removal of hard tissue.

Dental Scaling↗
PubMed1997

The diamond-coated sonic scaler tip. Part II: Loss of substance and alteration of root surface texture after different scaling modalities.

The authors have developed a set of four modified sonic scaler inserts with variously shaped shafts and diamond-coated budded inserts. The inserts are specially designed for the furcation area since instruments used hitherto have not been successful in completely preventing slow continuous periodontal breakdown in multirooted teeth. To improve understanding of their clinical effectiveness, instrumentation of dentin samples was done with a curette as well as conventional and modified sonic scaler inserts under standardized conditions. The results showed that significantly greater amounts of tooth substance were removed with the diamond-coated airscaler tips than with the conventional tip. The depth of substance removal was comparable to that obtained with hand instruments and increased with application force. Although differences in surface texture were found among the different modes of scaling, it remains to be determined whether they are of clinical significance.

Analysis of Variance↗
PubMed1997

Regenerative therapy in the treatment of maxillary molar Class II furcations: case reports.

This report demonstrates the use of regenerative therapy in the treatment of maxillary molar Class II furcations. The predominant therapy provided was open debridement in combination with DFDBA, e-PTFE membranes, and citric acid root conditioning. Case reports of consecutively treated patients that include radiographs and reentry photographs demonstrate that maxillary molar furcations can be successfully treated with predictability.

Adult↗