Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (52): 9742-9745.doi: 10.3969/j.issn.1673-8225.2011.52.012

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Effect of two different diameter implants on deformation of maxillary sinus mucosa: A three-dimensional finite element analysis

Liu Xiao-fang1, Hu Ling-ling2, Song Guang-bao1, Hou Ya-rong1, Liu Da-lie3, Zhang Jin-cai1   

  1. 1Department of Prosthodontics, Affiliated Stomatological Hospital of Southern Medical University, Guangdong Provincial Stomatological Hospital , Guangzhou  510280, Guangdong Province, China
    2Department of Applied Mechanics and Engineering, Engineering School of Sun Yat-sen University, Guangzhou  510275, Guangdong Province, China
    3Department of Plastic and Aesthetic Surgery, Affiliated Zhujiang Hospital of Southern Medical University, Guangzhou  510280, Guangdong Province, China
  • Received:2011-10-09 Revised:2011-10-26 Online:2011-12-24 Published:2011-12-24
  • Contact: Zhang Jin-aci, Professor, Doctoral supervisor, Department of Prosthodontics, Affiliated Stomatological Hospital of Southern Medical University, Guangdong Provincial Stomatological Hospital , Guangzhou 510280, Guangdong Province, China jincaizhang@hotmail.com Correspondence to: Liu Da-lie, Professor, Doctoral supervisor, Department of Plastic and Aesthetic Surgery, Affiliated Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong Province, China liudalie@hotmail.com
  • About author:Liu Xiao-fang, Chief physician, Department of Prosthodontics, Affiliated Stomatological Hospital of Southern Medical University, Guangdong Provincial Stomatological Hospital , Guangzhou 510280, Guangdong Province, China
  • Supported by:

    Guangdong Province Medical Research Project Foundation, No. A2009095*

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Abstract:

BACKGROUND: Mild and uniform deformation of maxillary sinus mucosa is an important factor that reduces the incidence of mucosal perforation during maxillary sinus elevation by using bone condensing technology.
OBJECTIVE: To compare the effects of two diameter implants on the deformation of maxillary sinus mucosa.
METHODS: Three-dimensional finite element models of the maxillary sinus mucosa (thickness 0.3 mm) with two diameter implants (4.1 mm, 4.8 mm) were established in the special unit of ANSYS software. Maxillary sinus elevation operation was simulated. Von Mises stress values of mucosa surface with different lifting height was calculated according to the finite deformation theory.
RESULTS AND CONCLUSION: The maximum stresses of all models existed in the center of the mucosa and the minimum stresses existed in the edge of the mucosa. There was no significant difference in the stress to the center of the mucosa between the two diameter implants (P > 0.05), but the stress in the edge of mucosa of the larger diameter implant (4.8 mm) was significantly less than that of the stress in the edge of the small diameter implant (4.1 mm). The larger diameter implant (4.8 mm) has less stress for augmentation of the maxillary sinus floor in the case of allowed width.

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