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Photogrammetric Analysis of Multiple implant abutment Impressions under Different Conditions

Open Journal of Stomatology 2017年第9期7卷 408-418页

作者： Funda Bayindir Melike Pinar Yildirim Nuran Dinckal Yanikoglu Department of Prosthodontics Faculty of DentistryAtatürk UniversityErzurumTurkey Beyhekim Oral and Dental Healthy Center SelcukluTurkey

Purpose: The aim of this investigation was to evaluate and compare the dimensional accuracy of hydrophilic polysiloxane, vinyl polysiloxane (VPS), and polyether (PE) impression materials under dry, moist and wet conditions. Methods: An acrylic master model including 6 implants was formed, and 108 impressions were made up of this acrylic model at total. In this study, the materials of hydrophilic polysiloxane impression material, 1 hydrophilic vinyl polysiloxane impression material and 1 polyether impression material were tested. Twelve impression of each material were created under dry, moist and wet respectively. Two reference distances were evaluated on each study model by using a graphics-editing program whereas for comparison of mean dimensional changes one-way analysis of variance and Student t-test were used. Results: One-way analysis of variance revealed significant differences between impression materials and conditions (P P Conclusions: All impression materials showed a statistically significant difference under dry, moist and wet conditions.

关键词： Photogrammetric Analysis implant abutment Impressions

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The integration of peri-implant soft tissues around zirconia abutments:Challenges and strategies

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Bioactive Materials 2023年第9期27卷 348-361页

作者： Kai Tang Meng-Lin Luo Wei Zhou Li-Na Niu Ji-Hua Chen Fu Wang National Clinical Research Center for Oral Diseases&State Key Laboratory of Military Stomatology&Shaanxi Key Laboratory of Stomatology Department of ProsthodonticsSchool of StomatologyThe Fourth Military Medical UniversityXi’anShaanxi710032China Institute of Stomatology&Oral Maxilla Facial Key Laboratory The First Medical CenterChinese PLA General Hospital&Department of StomatologyThe First Medical CenterChinese PLA General HospitalBeijingChina

Stable soft tissue integration around the implant abutment attenuates pathogen penetration,protects underlying bone tissue,prevents peri-implantitis and is essential in maintaining long-term implant stability.The desire for“metal free”and“aesthetic restoration”has favored zirconia over titanium abutments,especially for implant restorations in the anterior region and for patients with thin gingival biotype.Soft tissue attachment to the zirconia abutment surface remains a challenge.A comprehensive review of advances in zirconia surface treatment(micro-design)and structural design(macro-design)affecting soft tissue attachment is presented and strategies and research directions are discussed.Soft tissue models for abutment research are described.Guidelines for development of zirconia abutment surfaces that promote soft tissue integration and evidence-based references to inform clinical choice of abutment structure and postoperative maintenance are presented.

关键词： Zirconia implant abutment Surface modification Soft tissue adhesion

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