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Original Article

A Radiographic Evaluation of Graft Height Changes after Maxillary Sinus Augmentation according to Single-unit Implants and Multi-unit Implants

Mi Jung Park1, Myung-Rae Kim1,2, Ji-Youn Kim1,2, Ye-Mi Kim3, Sun-Jong Kim1,2
The Ewha Medical Journal 2012;35(1):26-31. Published online: March 31, 2012

1Department of Implant Dentistry, Graduate School of Clinical Dentistry, Ewha Womans University, Seoul, Korea.

2Division of Oral and Maxillofacial Surgery, Department of Dentistry, Ewha Womans University School of Medicine, Seoul, Korea.

3Division of Conservative Dentistry, Department of Dentistry, Ewha Womans University School of Medicine, Seoul, Korea.

Corresponding author: Sun-Jong Kim, Division of Oral and Maxillofacial Surgery, Department of Dentistry, Ewha Womans University School of Medicine, 1071 Anyangcheon-ro, Yangcheon-gu, Seoul 158-710, Korea. Tel: 82-2-2650-5631, Fax: 82-2-2650-5764, sjsj7777@ewha.ac.kr
• Received: January 3, 2012   • Accepted: February 20, 2012

Copyright © 2012. Ewha Womans University School of Medicine

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  • Objectives
    This study was performed to evaluate whether there is the difference of graft height changes in radiographic evaluation in single implants and multiple implants after maxillary sinus floor augmentation with an auto-xenograft mixture.
  • Methods
    The study group comprised 29 patients (16 men, 13 women; mean age, 56.5±12.4 years; range, 27 to 87 years) treated at the implant clinic of the Ewha Womans University Mokdong Hospital. They were treated with the sinus floor augmentation of lateral window technique and simultaneous placement of dental implants. Their implants have been evaluated for 42.4±10.5 months. To evaluate the height of grafted material, the real implant length was compared with that of panoramic radiography evaluated by a digital caliper (PACS program), and then the real height of grafted material was assumed. SPSS 19.0 was used in statistical analysis. Wilcoxon singed rank test was utilized for P value and Mann-Whitney for statistical significance in the changes of grafted height between single implants and multiple implants. The level of statistical significance was defined as P<0.001.
  • Results
    The evaluated graft height in single implants' group decreased to 0.60±0.54 mm at the time of delivery (after 7.5 months, P=0.001), in multi-unit implants' group to 0.96±0.84 mm (after 6.5 months, P<0.001). The evaluated graft height in single implants' group decreased to 1.11±0.75 mm at the last follow-up (after 43.5 months, P=0.001), in multi-unit implants' group to 1.52±0.99 mm (after 41.8 months, P<0.001). Mann-Whitney test was used for the difference between single implants and multi-unit implants. There was no difference in two groups at the time of delivery and the last follow-up (P>0.001).
  • Conclusion
    There was no statistical significance of radiographic graft height after maxillary sinus floor augmentation between single implants and multiple implants.
  • Keywords: Auto-xenograft mixture; Sinus augmentation; Panorama; Radiographic evaluation
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Table 1
The time of delivery and the last follow-up

Values are presented as mean±SD (range).

emj-35-26-i001.jpg
Table 2
Number of implants in the posterior maxilla

Values are presented as no (%).

emj-35-26-i002.jpg
Table 3
Graft height at the time of surgery and delivery

Values are presented as mean±SD.

emj-35-26-i003.jpg
Table 4
Graft height at the time of surgery and last follow-up

Values are presented as mean±SD.

emj-35-26-i004.jpg

Figure & Data

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      A Radiographic Evaluation of Graft Height Changes after Maxillary Sinus Augmentation according to Single-unit Implants and Multi-unit Implants
      Ewha Med J. 2012;35(1):26-31.   Published online March 31, 2012
      DOI: https://doi.org/10.12771/emj.2012.35.1.26
      Download Citation
      Download a citation file in RIS format that can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Reference Manager.
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      • Citation for the content below
      A Radiographic Evaluation of Graft Height Changes after Maxillary Sinus Augmentation according to Single-unit Implants and Multi-unit Implants
      Ewha Med J. 2012;35(1):26-31.   Published online March 31, 2012
      DOI: https://doi.org/10.12771/emj.2012.35.1.26
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      A Radiographic Evaluation of Graft Height Changes after Maxillary Sinus Augmentation according to Single-unit Implants and Multi-unit Implants
      A Radiographic Evaluation of Graft Height Changes after Maxillary Sinus Augmentation according to Single-unit Implants and Multi-unit Implants

      The time of delivery and the last follow-up

      Values are presented as mean±SD (range).

      Number of implants in the posterior maxilla

      Values are presented as no (%).

      Graft height at the time of surgery and delivery

      Values are presented as mean±SD.

      Graft height at the time of surgery and last follow-up

      Values are presented as mean±SD.
      Table 1 The time of delivery and the last follow-up

      Values are presented as mean±SD (range).

      Table 2 Number of implants in the posterior maxilla

      Values are presented as no (%).

      Table 3 Graft height at the time of surgery and delivery

      Values are presented as mean±SD.

      Table 4 Graft height at the time of surgery and last follow-up

      Values are presented as mean±SD.

      Table 1

      Table 2

      Table 3

      Table 4

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