Treatment of oligodontia with endo-osseous fixtures: experience in eight consecutive patients at the end of dental growth

Clinical manifestations of oligodontia consist in agenesia of multiple teeth eventually with deciduous retained teeth, atrophy of alveolar ridge, aberrations of teeth dimension, and shape, with consequent aesthetic and functional defects. The first choice treatment is based on a team collaboration of maxillo-facial surgeon, orthodontist, and prosthodontist, and is conditioned by various clinical parameters as number and site of lacking teeth, age and dental development of patients, eventual alveolar ridge atrophy.Treatment planning should be individualized for each patient. In our experience, based on 8 consecutive patients at the end of dental growth affected by oligodontia, endo-osseous fixtures positioning was carried out in consideration of long-lasting stability and optimal aesthetical characteristics. In 5 patients rehabilitative preprosthetic surgical procedures were performed, consisting in 2 sinus lift with immediate positioning of 3 fixtures in both cases, 4 heterologous bone graft in postextractive sites with retained ankylotic deciduous teeth and 1 positioning of reabsorbable biomembrane. A temporary removable denture was positioned immediately after surgery in order to obtain a prompt aesthetical and psychosocial restore. Osseointegration ratio as observed at 8.5 years follow-up was analyzed according to surgical variables and differences in prosthetic rehabilitation (fixtures supporting single crown versus multiple crowns).Successful osteointegration was observed at 8.5 years mean follow-up in 58 fixtures, corresponding to a 96.6% ratio. Failure of integration was encountered in fixtures immediately positioned in postextractive sites having a mild grade of bone atrophy, supporting single crown. A rate of success of 100% was observed in cases of immediate or delayed positioning in postextractive or traditional sites.Fixtures positioning in patients affected by isolated oligodontia, without malformative syndromes, and at the end of dental development, is subject to the same recommendations for patients with lacking permanent teeth not caused by agenesia.     

垂直骨量不足时种植修复体的牙龈补偿处理及其效果研究

目的 探讨和评估垂直骨量不足的种植修复患者采用牙龈色材料进行牙龈补偿修复的临床效果、技术要点及应用价值.方法 2002年2月至2011年1月采用牙龈瓷或牙龈色树脂对北京大学口腔医学院·口腔医院口腔种植中心垂直骨量不足患者31例(男性22例、女性9例)的种植修复体进行了牙龈补偿修复处理.31例中牙列缺失12例、牙列缺损19例,共有152件种植体支持固定修复体.对种植体存留率、修复体质量及美学、软组织变化、牙龈状态等进行观察和评价.患者追踪3～108个月,平均31.5个月.结果 本研究观察期内152枚种植体存留率100％,修复体总体评估可接受率96.8％.结论 具有适应证的垂直骨量不足患者种植修复时牙龈补偿处理方法临床可行、无外科创伤、美观效果可接受、患者满意度高.     

Burning mouth syndrome. Clinical experience with 75 patients

The burning mouth syndrome (BMS) is a very common disorder frequently seen in practical dentistry. It is a particular condition with a complex of strange burning sensation localized in the oral mucosa which is clinically normal. It is very important for the dentist to recognize and classify this particular syndrome in order to exclude other factors which can cause the same symptoms. On the basis of personal experience on 75 patients, the complex management of this particular group of patients has been evaluated to make a right diagnosis and a correct treatment.     

Treatment of xerostomia in prosthetic patients using local acupuncture points on the face

Acupuncture is gaining popularity in mainstream dentistry to treat various conditions. This paper aims to present acupuncture techniques to treat prosthetic patients with xerostomia using local acupuncture points on the face.     

Percentages of lifetime caries experience retained by eight systems of partial DMF-recording

Abstract Eight partial recording systems were compared. Averages of D(M)FS experience retained by the different systems ranged from 81.0 to 93.6%. The percentages of D(M)FS experience retained varied when the systems were applied on different data on canes occurrence by surfaces. Most systems gave a fairly accurate assessment of the caries reduction in Norwegian schoolchildren due to war-time dietary restrictions.     

Oral dysplasia and in situ carcinoma: clinicopathologic correlations of eight patients.

Eight patients with multiple oral dysplastic epithelial lesions were followed by clinical examinations and serial biopsies for periods varying from four to 22 years. The dysplasias and in situ carcinomas were characterized by persistence, recurrence, and eventual progression to invasive squamous cell carcinoma. It could not be determined whether dysplasia and in situ carcinoma were separate clinical-pathologic entities with similar end points or whether they were part of a continuum in a spectrum of epithelial neoplasia. The need for close clinical observation and local excision was emphasized because of the multiplicity of lesions and because of the protracted clinical course. Treatment of these patients was problematic because of similarities of the disease to lichen planus. It is possible that they had a premalignant disease process that mimicked lichen planus, or that they had an unusual form of lichen planus for which criteria have not been established. The progressive nature of the disease was exemplified by one death, one patient with cervical metastasis, and one with generalized remote metastatic disease.     

Chemoprophylaxis of prosthetic joint patients during dental treatment: a decision-utility analysis.

A decision-analytic model and a cost effectiveness analysis was performed on 1 million hypothetic prosthetic joint patients undergoing dental treatment, to determine the most cost-effective strategy to prevent late prosthetic joint infections. The cost per quality-adjusted life-year saved (QALY) was determined for three preventive strategies: no prophylaxis, oral penicillin, and oral cephalexin. The UCLA Pain-Walking-Function-Activity Scale was used to obtain quality-of-life adjustments (utility assessment) for the study population. Costs were derived from 70 patients hospitalized between July 1, 1982, and June 30, 1986, at the UCLA Center for Health Sciences. The most cost-effective preventive strategy was the no prophylaxis alternative ($196,500/QALY). However, by recommending a 1-day strategy of oral cephalexin only to those dental patients at high risk for late prosthetic joint infections rather than a 3-day regimen to all patients, the cost effectiveness improved from $1.1 million/QALY to $446,100/QALY while maintaining a low risk of death (0.38 deaths per 10(6) dental visits).     

Osseointegration of synthetics. Clinical experience

Some products, for bone's syntethic implants (resorbable or not), are treated in the first part, in particular way the beta-TCMP (resorbable bone's integrator) for valueing its good validity. In the second part the Authors show some clinic cases treated with beta-TCMP and the obtained results. Then generic indications around the use of the product have been showed for the good answer in the bone's rigeneration.     

The prosthetic treatment of cleft patients. 1. Fixed constructions]

The difficulties encountered in the prosthetic treatment of cleft patients depend on the kind and the extent of the malformation. Modern oral surgical and orthodontic techniques offer better prerequisites than former methods. All must be done to preserve the endangered teeth as long as possible. The insertion of bridge prostheses is indicated if the defects are corrected by surgical procedures and if there is no marked pseudoprognathism.     

Clinical experience of root canal filling by ultrasonic condensation of gutta-percha.

Ninety human teeth with a total of 181 prepared root canals were filled with the use of ultrasonically energized spreaders as an aid for lateral condensation of gutta-percha cones. The results were evaluated on the basis of clinical and radiographic criteria. Adequate fillings were found in 93% of the canals and the overall success rate was 93%. All of the recalled patients were clinically comfortable.     

Clinical evaluation and prosthetic complications of single tooth replacements by non-submerged implants

The aim of the present study was to evaluate single tooth replacements by non-submerged implants. In the time period from 1990 to 1998, 72 patients were consecutively admitted for treatment with a total of 109 solid screw ITI-implants supporting single crowns. All crowns were ceramic to metal fused with a ceramic occlusal surface and mounted to the octa-abutment. The mean observation time was 4.3 years, ranging from >1 to 9 years. The implants were monitored regularly by periimplant parameters. Periapical radiographs using the parallel technique were taken after the healing period and in 1999 for comparative measurements. No implant was lost during the healing phase, while 3 failures occurred after a loaded period of 2.5 and >5 years, respectively. The 5-year cumulative survival rate was 99.1%. In the course of the study, only 2 implants exhibited marginal inflammation that required treatment. The radiographically measured distance (DIB) from the implant shoulder to the first implant-bone contact was significantly increased in 1999 and different between the two readings. However, this difference in DIB was not significant between implants with a short (1 year) and long (>5 years) observation period. It was concluded that changes in the crestal bone level occur mostly in the first postsurgical year. Prosthetic complications were rare, mostly encountered in the first year after loading and often limited to re-tightening of the occlusal screw.     

Total prosthetic replacement of the TMJ: experience with two systems 1988-1997

We report our experience with the Vitek VK II and the Christensen systems for total prosthetic replacement of the temporomandibular joint, in 62 patients treated between 1988 and 1997. Thirteen were treated in Birmingham and 49 in Gloucester. A total of 86 joints were replaced, of which 27 (31%) were Vitek VK II and 59 (69%) were Christensen prostheses. Just over half of the patients were treated for degenerative arthropathy or osteoarthritis, and the second most common diagnosis was rheumatoid arthritis. Twenty-five patients had had previous operations. The median follow-up was 14.5 months (range 1-120). Preoperatively only 14 patients (23%) could eat all types of food - and postoperatively this increased to 48 (77%). Thirty-nine patients (63%) reported severe pain preoperatively compared with three (5%) postoperatively. No prostheses were rejected, but four patients required replacement of Vitek VK II by Christensen prostheses; all four showed histological evidence of a foreign body giant cell reaction. The overall success rate was 58/62 patients and 81/86 joints replaced (94% in each case). However, for the Vitek VK II system alone the success rate was 14/17 patients (82%) and 24/27 joints replaced (89%).