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https://www.selleckchem.com/products/CP-690550.html To investigate the overeruption of unopposed molars and the adaptation of alveolar bone height in young and adult rats. A total of 56 4-week-old (young) and 26-week-old (adult) male Wistar rats were followed up longitudinally. In each age group (n = 28), 16 rats were included in the experimental subgroup, in which all the maxillary right molars were extracted, and 12 rats were included in the control subgroup. All rats were scanned at regular intervals with in vivo microcomputed tomography for a 12-week period, and the eruption rate of the mandibular first molars and the surrounding bone were measured, with the reference point at the mandibular canal. The molar categories were unopposed right molars and overloaded left molars in the experimental group and control molars in the control group. The young unopposed molars had the highest mean eruption rate (172 ± 67 μm/day). The overeruption was most marked during the first 3 weeks postextraction, thereafter gradually returning to a level comparable to contlars compared to control molars. To investigate the effect of aging on the morphology of the interface between monolithic implant crowns and standardized titanium base abutments. Four groups of hybrid abutment crowns differing in restorative material (lithium disilicate [LD] or polymer-infiltrated ceramic network [PICN]) and in fabrication procedure of the interfacial zone for luting to a titanium abutment (milled during CAD/ CAM procedure [M] or prefabricated [P]) were formed LDS-M, LDS-P, PICN-M, and PICN-P (n = 10 each). The morphology of the crown-abutment interface was examined before and after artificial aging using scanning electron microscopy. The total gap length per specimen was measured at both time points, and intergroup (Kruskal-Wallis [KW]) plus pairwise (Wilcoxon Mann-Whitney [WMW]) comparisons were performed (α = .05). Before aging, statistically significant differences in gap length were identified a

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