Ye Liang1, ShanShan Yuan2, JingJing Huan3, YiYi Zhang1, ChangYun Fang4, JiaDa Li5. 1. Attending Physician, Department of Stomatology, Xiangya Hospital of Central South University, Changsha, China. 2. Resident, Department of Stomatology, Xiangya Hospital of Central South University, Changsha, China. 3. Private Practitioner, Department of Stomatology, Xiangya Hospital of Central South University, Changsha, China. 4. Professor and Department Head, Department of Stomatology, Xiangya Hospital of Central South University, Changsha, China. Electronic address: fcy@kuye.cn. 5. Professor, School of Life Sciences, Central South University, Changsha, China.
Abstract
PURPOSE: We used a single-variable method to analyze the influence of the guide sleeve height of a conventional template on implantation accuracy in vitro and improve the function of short-sleeve templates by adding a visual direction-indicating guide (VDING). MATERIALS AND METHODS: We created 100 copies of a volunteer's dentition plaster model. The normal template (NT) and the VDING template (VT) were made with guide sleeves 2, 5, 8, and 10 mm in height. Additionally, a freehand (FH) group and a group with an FH-based visual guide were used. Simulated implantation in an emulated head model was performed in each group. After surgery, cone-beam computed tomography images of the plaster were used for registration, and the accuracy was compared among the groups. RESULTS: When the NT sleeve height was 5 mm or less, increased deviation was found, and the results for some of the accuracy indicators were not different from those in the FH group. The accuracy of sleeves 5 mm or less in height was better in the VT group than in the NT or FH group. CONCLUSIONS: Use of the NT with a guide sleeve height of 5 mm or less can introduce large deviations in implantation, which can be prevented by the VT. However, the use of the VDING alone was not sufficient.
PURPOSE: We used a single-variable method to analyze the influence of the guide sleeve height of a conventional template on implantation accuracy in vitro and improve the function of short-sleeve templates by adding a visual direction-indicating guide (VDING). MATERIALS AND METHODS: We created 100 copies of a volunteer's dentition plaster model. The normal template (NT) and the VDING template (VT) were made with guide sleeves 2, 5, 8, and 10 mm in height. Additionally, a freehand (FH) group and a group with an FH-based visual guide were used. Simulated implantation in an emulated head model was performed in each group. After surgery, cone-beam computed tomography images of the plaster were used for registration, and the accuracy was compared among the groups. RESULTS: When the NT sleeve height was 5 mm or less, increased deviation was found, and the results for some of the accuracy indicators were not different from those in the FH group. The accuracy of sleeves 5 mm or less in height was better in the VT group than in the NT or FH group. CONCLUSIONS: Use of the NT with a guide sleeve height of 5 mm or less can introduce large deviations in implantation, which can be prevented by the VT. However, the use of the VDING alone was not sufficient.
Authors: Cornelia Edelmann; Martin Wetzel; Anne Knipper; Ralph G Luthardt; Sigmar Schnutenhaus Journal: J Clin Med Date: 2021-04-21 Impact factor: 4.241
Authors: Sigmar Schnutenhaus; Anne Knipper; Martin Wetzel; Cornelia Edelmann; Ralph Luthardt Journal: Int J Environ Res Public Health Date: 2021-03-21 Impact factor: 3.390