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This systematic literature review set out to investigate the clinical outcomes of autogenous tooth root blocks used for ridge augmentation: survival rates, block resorption, implant survival, post-surgical complications, and histology findings. This review followed PRISMA guidelines. An automated search was made in four databases, supplemented by a manual search for relevant articles published before December 2020. The quality of evidence provided was assessed with the Newcastle–Ottawa Quality Assessment Scale and the Joanna Briggs Institute Critical Appraisal tool. Seven articles fulfilled the inclusion criteria and underwent analysis. The articles included a total of 136 patients, who received 118 autogenous tooth root blocks and 26 autogenous bone blocks showing block survival rates of 99.15% and 100%, respectively. Tooth root blocks presented a mean bone gain that was similar to autologous bone blocks but showed less resorption. The implant survival rate was 98.32% for autogenous tooth root blocks. Reconstruction of alveolar crests by means of autogenous tooth root blocks appears to be a satisfactory option for single-tooth gaps and low grades of bone atrophy in terms of the survival of the bone block and the implants placed subsequently. More research providing long-term data is needed to confirm these findings. [ABSTRACT FROM AUTHOR]

The present work was conceived as an investigation on the effects of pulse plating on the microstructure of matt tin coatings from a proprietary acidic methanesulphonate bath. The effects of pulse plating on current efficiency, surface roughness, grain size and orientation of tin deposits were investigated as a function of the duty cycle and the pulse frequency. The impact of pulse plating on the microstructure emerged clearly from the results gathered in this work, though the effect size was relatively limited. The average grain size was found to increase with increasing duty cycle, while the opposite tendency was noticed with increasing frequency. The grain structure, i.e. the cross-section microstructure of the tin deposits, was not influenced to any appreciable degree by pulsed current deposition, remaining columnar irrespective of the pulse plating parameters within our operating range. Grain orientation of direct current as well as high duty cycle pulse plated deposits is a strong (110) texture; this turned out to weaken as either the duty cycle or the frequency was reduced. A relatively stronger impact of pulse plating was that on surface morphology, where surface roughness of pulse plated deposits is reduced with decreasing duty cycle or frequency. [ABSTRACT FROM AUTHOR]

The article presents a study which aimed to conserve the used generic name Maculinea introduced by R. Van Eecke in 1915 in its accustomed usage. According to some publications, Maculinea and Phengaris form a monophyletic group based on both molecular and morphological data. The researchers believe that the synonymisation of Maculinea with Phengaris will continue to be ignored by most ecologists and conservation biologists. They also propose that Maculinea be given precedence over Phengaris Doherty in 1891 whenever the two are considered to be synonyms to ensure nomenclature stability.