Journal of Shanghai Jiao Tong University (Medical Science) >

2021 , Vol. 41 >Issue 3: 339 - 343

DOI: https://doi.org/10.3969/j.issn.1674-8115.2021.03.009

Clinical research

CBCT effects of different abutment angles on alveolar bone changes in maxillary anterior teeth

  • Jian-ming YUAN ,
  • Bin WEI ,
  • Wei-xing XU ,
  • Lei ZHANG
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  • 1.Department of Prosthodontics, the Second Stomatological Disease Institution of Huangpu District in Shanghai, Shanghai 200020, China
    2.First Dental Clinic, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
    3.VIP Clinic, the Second Stomatological Disease Institution of Huangpu District in Shanghai, Shanghai 200020, China
    4.Department of Synthetics, the Second Stomatological Disease Institution of Huangpu District in Shanghai, Shanghai 200020, China

Received date: 2020-05-20

  Online published: 2021-04-06

Supported by

Science and Technology Project Fund of Shanghai Huangpu District Science and Technology Commission(HKW201632);Foundation for Medical and Health Key Research and Development of Huangpu District in Shanghai(HWZFK201810)

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Abstract

Objective

·To compare the imaging differences of alveolar bone changes after using different angles of abutment implants in the maxillary anterior area.

Methods

·Forty patients of maxillary anterior area implant restoration at the Second Stomatological Disease Institution of Huangpu District in Shanghai from January 2017 to December 2018 were divided into 2 groups according to the different angle of abutment, with 20 cases in each group, which were treated with the 0° and 25° abutment, respectively. Cone beam computed tomography (CBCT) examination was performed immediately, 6 months, 12 months and 18 months after angular abutment restoration, and the differences of CBCT changes in the thickness and height of labial alveolar bone between the two groups at different periods was measured by self-control study and paired t test.

Results

·CBCT comparison of 0° and 25° groups at 6 months, 12 months and 18 months after restoration showed no significant difference in the thickness and height of alveolar bone in the two groups.

Conclusion

·Change of alveolar bone around the implant can be quantified by using CBCT image examination. When the base angle of the maxillary anterior tooth area is within 25°, the base angle has no significant effect on the change of alveolar bone.

Key words： cone beam computed tomography (CBCT); implant; angle abutment; alveolar bone

Cite this article

Jian-ming YUAN , Bin WEI , Wei-xing XU , Lei ZHANG . CBCT effects of different abutment angles on alveolar bone changes in maxillary anterior teeth[J]. Journal of Shanghai Jiao Tong University (Medical Science), 2021 , 41(3) : 339 -343 . DOI: 10.3969/j.issn.1674-8115.2021.03.009

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