Does initial buccal crest thickness affect final buccal crest thickness after flapless immediate implant placement and provisionalization:A prospective cone beam computed tomogram cohort study

BACKGROUND: Flapless immediate implant placement and provisionalization (FIIPP) in the aesthetic zone is still controversial. Especially, an initial buccal crest thickness (BCT) of ≤1 mm is thought to be disruptive for the final buccal crest stability jeopardizing the aesthetic outcome. PURPOSE: To radiographically assess the BCT and buccal crest height (BCH) after 1 year and to calculate the correlation between initial and final achieved BCT. MATERIALS AND METHODS: The study was designed as a prospective study on FIIPP. Only patients were included in whom one maxillary incisor was considered as lost. In six centers, 100 consecutive patients received FIIPP. Implants were placed in a maximal palatal position of the socket, thereby creating a buccal space of at least 2 mm, which was subsequently filled with a bovine bone substitute. Files of preoperative (T0), peroperative (T1) and 1-year postoperative (T3) cone beam computed tomogram (CBCT) scans were imported into the Maxillim™ software to analyze the changes in BCT-BCH over time. RESULTS: Preoperatively, 85% of the cases showed a BCT ≤1 mm, in 25% of the patients also a small buccal defect (≤5 mm) was present. Mean BCT at the level of the implant-shoulder increased from 0.6 mm at baseline to 3.3 mm immediate postoperatively and compacted to 2.4 mm after 1 year. Mean BCH improved from 0.7 to 3.1 mm peroperatively, and resorbed to 1.7 mm after 1 year. The Pearson correlation of 0.38 between initial and final BCT was significant (p = 0.01) and therefore is valued as moderate. If only patients (75%) with an intact alveolus were included in the analysis, still a "moderate correlation" of 0.32 (p = 0.01) was calculated. CONCLUSIONS: A "moderate correlation" was shown for the hypothesis that "thinner preoperative BCT's deliver thinner BCT's" 1 year after performing FIIPP

Reproducibility of different methods to measure the endothelial function

This study compares the reliability and reproducibility of flow-mediated dilatation (FMD) and peripheral arterial tonometry (PAT) to assess endothelial function. Eighteen volunteers with coronary heart disease underwent simultaneous testing of FMD by means of brachial artery ultrasound scanning and PAT with the EndoPAT 2000. The subjects underwent both tests twice with an interval of 30 minutes and the same protocol was repeated 2 days later. The within-day variability was lower for the FMD measurements than for the PAT measurements (10% versus 18%; p < 0.05). The between-day variability was similar (11%). A significant correlation was found between PAT and FMD (r = 0.57, p < 0.001). The typical errors of measurements for FMD were lower than those for PAT. In conclusion, in this study, FMD demonstrated the best reliability for the within- and between-day and separate day measurements when compared to PAT.status: publishe

Behandeling van neusseptumperforatie met prothese op maat

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Behandeling van neusseptumperforatie met prothese op maat

In this article a case is presented with a nasal septal perforation. The steps that lead to treatment with a custom made nasal septal prosthesis are discussed. The clinic, ethiologic and therapeutic aspects are discussed in view of the current literature as well as the process of producing a custom made nasal septal prosthesis using conebeam C

Reproducibility of different methods to measure the endothelial function

Full text via link. This study compares the reliability and reproducibility of flow-mediated dilatation (FMD) and peripheral arterial tonometry (PAT) to assess endothelial function. Eighteen volunteers with coronary heart disease underwent simultaneous testing of FMD by means of brachial artery ultrasound scanning and PAT with the EndoPAT 2000. The subjects underwent both tests twice with an interval of 30 minutes and the same protocol was repeated 2 days later. The within-day variability was lower for the FMD measurements than for the PAT measurements (10% versus 18%; p < 0.05). The between-day variability was similar (11%). A significant correlation was found between PAT and FMD (r = 0.57, p < 0.001). The typical errors of measurements for FMD were lower than those for PAT. In conclusion, in this study, FMD demonstrated the best reliability for the within- and between-day and separate day measurements when compared to PAT