Schweizer Monatsschrift fur Zahnmedizin = Revue mensuelle suisse d'odonto-stomatologie = Rivista mensile svizzera di odontologia e stomatologia最新文献

Results of immediately loaded implants are presented. 34 patients with 136 interforaminal MonoType implants (Straumann,Basel, Switzerland) were included in the study. The bar retention was manufactured fter the operation, inserted and covered with a hybrid prosthesis. 28 patients showed up for the follow-up study, the average time range was three years. Five implants were rated as failures, the cumulative six-year success rate being 94%. Interforaminal immediately loaded MonoType implants in edentulous patients showed very good results, comparable to similar studies with different systems.

The restoration of anterior teeth even for the experienced practitioner remains a challenge. Although there are different full-ceramic materials available on the market, the reproduction of optical properties in natural teeth is not easy at all. In this article, the author presents a simplified classification of teeth to be restored, in relation to the optical properties of actual ceramic systems, which helps to make the natural reproduction more predictable. For the dentist it's important to know about the optical properties of the teeth to be restored and the ceramic material used. Without this, the clinical success of restorations in the anterior segment of may not be predictable at all. For implant retained-and bridge-work there are additional parameters that need to be taken into consideration which are not addressed in this article. Ceramic materials with a high light transmission allow, in combination with adhesive bonding, the fabrication of esthetic restorations. High strength ceramics block the light more and therefore are not indicated for this type of reconstruction. They may be used to mask discolored substructures. The communication between dentist and lab technician plays an important role to be clinically successful.

The aim of the investigation was to collect information from specialized hospitals regarding dental care before and after organ transplantation or replacement of prosthetic joints. 50 transplantation centres and 100 orthopaedic hospitals in Germany were chosen. A questionnaire was used to elucidate the following aspects: Is a dental examination carried out preoperatively? When the patient is discharged, is he or she recommended to have antibiotic prophylaxis before dental treatment? If so, which antibiotic is recommended? The response rate was 56% (n = 28) for transplantation centres. 89% arranged a dental examination before the transplantation. 83% of those questioned recommend antibiotic prophylaxis before dental treatment: Amoxicillin was mentioned most frequently (36%). The response rate of the orthopaedic hospitals was 31% (n = 31). 3% of those questioned arranged a dental examination before insertion of an endoprothesis. 55% recommend antibiotic prophylaxis when dental treatment is to be carried out following the insertion of the endoprosthesis. Cephalosporine was most frequently mentioned (33%). It was not possible to identify a uniform recommendation regarding dental care before and after organ transplantation or replacement of prosthetic joints either for patients with an organ transplant or those having a prosthetic joint.

This case report shows the experimental treatment of a 85 year old female with advanced periimplantitis, the surgical augmentation, the clinical as well as the radiological follow-up until twelve months after surgery. the treatment of the advanced periimplantitis with a three-dimensional vertical defect around the implant consisted of a surgical bone augmentation technique supported by the Air-Flow Master® system (EMS, Nyon, Switzerland).

The aim of the study was to evaluate the efficacy of Parodontax® (GlaxoSmith-Kline, Bühl, Germany) on the signs gingival inflammation and the enzyme activity of matrix metalloproteinase-8 (aMMP-8) in the gingival crevicular fluid. After approval by the ethics commission, a total of 50 volunteers participated in the study; group 1 (n = 25, age: 43 ± 12 years) with moderate gingivitis (BOP +) and group 2 (n = 25, age: 29 ± 11 years) with clinically healthy gingival conditions (BOP -). After obtaining anamnestic data, the dental examination included assessment of oral hygiene (Quigley & Hein 1962), gingival inflammation (Saxer & Mühlemann 1975), probing pocket depth and clinical attachment level. Gingival crevicular fluid was collected from both groups. A quantitative assessment of aMMP-8 in the gingival crevicular fluid samples was performed (DentoAnalyzer, Dentognostics GmbH, Jena, Germany). Study participants were instructed to use only Parodontax®. After three weeks, all parameters were measured again. The aMMP-8 values of group 1 were significantly reduced after the use of Parodontax® toothpaste and mouthwash (p < 0.001; baseline median 41.25 ± 38.16 ng/ml, final post-treatment median 7.73 ± 7.58 ng/ml aMMP-8 eluate; group 2: baseline median 3.75 ± 3.16 ng/ml, final post-treatment median 3.73 ± 1.54 ng/ml aMMP-8 eluate). Gingival inflammation and plaque accumulation were reduced. It was shown that Parodontax® was effective in reducing the enzymatic activity of inflammation.

Zirconia as a framework material is well established in fixed prosthodontics. However, for its application for removable dentures little experience exists. Zirkonzahn® has developed a copy-milling unit, that is a manually operated machine for the manufacture not only of frameworks but also of complete removable dentures. The aim of this case report is to show the step-by-step clinical and technical fabrication of a zirconia bar on implants and of a corresponding zirconia complete denture. The advantages and disadvantages of the system are presented and problems are critically discussed.

Background: At the Clinic for Radiation Oncology at the Zurich University Hospital (UniversitätsSpital Zürich [USZ]), head-and-neck tumor (HNT) patients have been treated with intensity-modulated radiotherapy (IMRT) since 01/2002 (n 〉 800). This method causes less damage to normal tissues adjacent to the tumor, and thus it was possible in the head/neck region to markedly reduce the rate of osteoradionecrosis (ORN), in addition to reducing the rate of severe xerostomia. Based on these results, risk-adapted dental care (RaDC) was adopted by our clinic as the standard mode of pre-IMRT dental treatment. The guidelines as formulated by Grötz et al. were respected. ORN prophylaxis is one of the most important goals of pre-radiotherapy dental care, and the ORN rate is a measurable parameter for the efficacy of dental care, given a certain radiation technique. The aim of the present study was therefore to evaluate the efficacy of RaDC as reflected by the ORN rate of our IMRT patients.

Materials and methods: IN August 2006, RaDC was clinically implemented and has been used for all HNT patients prior to IMRT since then. Before that (01/2002-07/2006), dental restorations were performed according to the usual procedure.

Results: The rate of grade-2 ORN was similar in the conventionally treated and RaDC groups (2% and 1%, resp.); grade-3 ORN had not occurred by the time the analysis was conducted. As expected, fewer extractions were performed in the RaDC cohort (no extractions in 47% of the RaDC/IMRT cohort vs. 27% in the IMRT cohort receiving conventional dental care).

Conclusion: After considerably less invasive dental treatment, no higher-grade ORN occurred and no ORN-related jaw resections were required. Based on the present data, risk-adapted minimally invasive dental care is recommended before IMRT.

Background: The antibacterial photodynamic therapy (PDT) has been effective in the periodontal therapy. The laser light application reported in the literature so far is the subgingival placement of a light fibre.

Objectives: To study the effect of PDT with a transgingival laser application.

Materials and methods: In 19 patients with untreated periodontitis 1 test and 1 control site were selected. Both pockets were treated by scaling, root planing. the Test site received additional PDT (LASOTRONIC MED 701 by ORCOS MEDICAL, Switzerland) at baseline, after 2 and 6 months. The control sites were rinsed with ringer solution. Clinical parameters (ST, BOP, CAL) and bacterial monitoring (PADO, IAI, Switzerland) at baseline, 2 and 6 months were recorded.

Results: Mean pocket reduction was after 6 months 2.1 mm (+/-1.4) in the test group, 1.5 mm (+/-1.6) in the control group significantly different. The 95% confidence interval for the difference of the mean reductions of the test and control group after 6 months is (1.5, 3). Mean CAL gain after 6 months was 1.5 mm (+/-1.3) in the test, 0.9 mm (+/-1.7) in the control group. T. denticola showed lower number after 2 and 6 months in the test versus the control. The total bacterial load (TBL) showed significantly better reduction in the test group at 6 months.

Conclusions: The transgingival application of PDT with the MED 701 showed clinical and bacteriological effects which are comparable to those reported in the literature with the subgingival method. The transgingival method is convenient, harmless and easy to perform.

This survey aimed to evaluate the common practice of regenerative periodontal surgery with special regard to the use of enamel matrix derivatives (EMD, Emdogain® ) by board-certified specialists in periodontology and non-certified, but active members of the Swiss Society of Periodontology (SSP). A cross-sectional postal survey of 533 dentists, representing all members of the SSP practising in Switzerland, was conducted. The questionnaire consisted of three sections, assessing: 1) general personal information regarding the practice setting and education, 2) general questions regarding periodontal surgery practices and 3) specific questions regarding the use of EMD. The information obtained was compared and differences between specialists and non-specialists were calculated. P-values smaller than 5% were considered significant. Sixty-nine percent of the specialists answered the questionnaire, compared to only 37.4% of the non-specialists (overall: 42.4%). In general, specialists performed surgeries more frequently, and presented a significantly higher percentage of EMD users than the non-specialists. The application guidelines were followed in general. Some differences were observed in application and selection criteria. The subjective perception of clinical success varied greatly among clinicians. Residual pockets were reported to be present in approximately one third of the defects after therapy. In conclusion, this survey revealed that EMD was used on a regular basis by dentists performing periodontal therapy. In addition, the answers by both groups generally corresponded well with the current available literature.