A three-dimensional finite element analysis of short dental implants in the posterior maxilla

Sei Joong Kim, Sungtae Kim, Hyunmin Choi, Daegon Woo, Young Bum Park, June Sung Shim, Hansung Kim, Keun Woo Lee

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Purpose: This study evaluated the biomechanical behavior of short dental implants with different heights of residual bone and compared it with that of standard dental implants in 13 mm or less of residual bone by means of finite element analysis. Materials and Methods: It was assumed that the maxillary first and second molars had been replaced with splinted cast gold crowns supported by two implants. A total of five posterior edentulous maxilla models were fabricated with various residual bone heights (13 mm, 7 mm, 6 mm, 5 mm, and 4 mm). Residual bone height was 13 mm in the group 1 model (control) and 7, 6, 5, and 4 mm in group 2-1, group 2-2, group 2-3, and group 2-4 models, respectively. In the group 1 model, two identical implants (4.5 × 11 mm) and abutments (6 × 2.5 mm) were placed. In the group 2 models, two identical wide/short implants (6 × 5.7 mm) and abutments (6 × 5 mm) were placed. Off-axis (30 degrees) loading of 187 N was applied to the central fossae of the two implant-supported crowns. Results: Maximum von Mises stresses in crestal cortical bone were lower in group 2 models than in the group 1 model. Conclusion: This numeric simulation confirmed that, without maxillary sinus bone graft, more effective stress distribution could be obtained in 4, 5, 6, or 7 mm of residual bone with short dental implants than in 13 mm of residual bone with standard dental implants.

Original languageEnglish
Pages (from-to)155-164
Number of pages10
JournalInternational Journal of Oral and Maxillofacial Implants
Volume29
Issue number2
DOIs
Publication statusPublished - 2014 Jan 1

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Finite Element Analysis
Dental Implants
Maxilla
Bone and Bones
Crowns
Maxillary Sinus
Gold
Transplants

All Science Journal Classification (ASJC) codes

  • Oral Surgery

Cite this

Kim, Sei Joong ; Kim, Sungtae ; Choi, Hyunmin ; Woo, Daegon ; Park, Young Bum ; Shim, June Sung ; Kim, Hansung ; Lee, Keun Woo. / A three-dimensional finite element analysis of short dental implants in the posterior maxilla. In: International Journal of Oral and Maxillofacial Implants. 2014 ; Vol. 29, No. 2. pp. 155-164.
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abstract = "Purpose: This study evaluated the biomechanical behavior of short dental implants with different heights of residual bone and compared it with that of standard dental implants in 13 mm or less of residual bone by means of finite element analysis. Materials and Methods: It was assumed that the maxillary first and second molars had been replaced with splinted cast gold crowns supported by two implants. A total of five posterior edentulous maxilla models were fabricated with various residual bone heights (13 mm, 7 mm, 6 mm, 5 mm, and 4 mm). Residual bone height was 13 mm in the group 1 model (control) and 7, 6, 5, and 4 mm in group 2-1, group 2-2, group 2-3, and group 2-4 models, respectively. In the group 1 model, two identical implants (4.5 × 11 mm) and abutments (6 × 2.5 mm) were placed. In the group 2 models, two identical wide/short implants (6 × 5.7 mm) and abutments (6 × 5 mm) were placed. Off-axis (30 degrees) loading of 187 N was applied to the central fossae of the two implant-supported crowns. Results: Maximum von Mises stresses in crestal cortical bone were lower in group 2 models than in the group 1 model. Conclusion: This numeric simulation confirmed that, without maxillary sinus bone graft, more effective stress distribution could be obtained in 4, 5, 6, or 7 mm of residual bone with short dental implants than in 13 mm of residual bone with standard dental implants.",
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A three-dimensional finite element analysis of short dental implants in the posterior maxilla. / Kim, Sei Joong; Kim, Sungtae; Choi, Hyunmin; Woo, Daegon; Park, Young Bum; Shim, June Sung; Kim, Hansung; Lee, Keun Woo.

In: International Journal of Oral and Maxillofacial Implants, Vol. 29, No. 2, 01.01.2014, p. 155-164.

Research output: Contribution to journalArticle

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AU - Kim, Sei Joong

AU - Kim, Sungtae

AU - Choi, Hyunmin

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AU - Shim, June Sung

AU - Kim, Hansung

AU - Lee, Keun Woo

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N2 - Purpose: This study evaluated the biomechanical behavior of short dental implants with different heights of residual bone and compared it with that of standard dental implants in 13 mm or less of residual bone by means of finite element analysis. Materials and Methods: It was assumed that the maxillary first and second molars had been replaced with splinted cast gold crowns supported by two implants. A total of five posterior edentulous maxilla models were fabricated with various residual bone heights (13 mm, 7 mm, 6 mm, 5 mm, and 4 mm). Residual bone height was 13 mm in the group 1 model (control) and 7, 6, 5, and 4 mm in group 2-1, group 2-2, group 2-3, and group 2-4 models, respectively. In the group 1 model, two identical implants (4.5 × 11 mm) and abutments (6 × 2.5 mm) were placed. In the group 2 models, two identical wide/short implants (6 × 5.7 mm) and abutments (6 × 5 mm) were placed. Off-axis (30 degrees) loading of 187 N was applied to the central fossae of the two implant-supported crowns. Results: Maximum von Mises stresses in crestal cortical bone were lower in group 2 models than in the group 1 model. Conclusion: This numeric simulation confirmed that, without maxillary sinus bone graft, more effective stress distribution could be obtained in 4, 5, 6, or 7 mm of residual bone with short dental implants than in 13 mm of residual bone with standard dental implants.

AB - Purpose: This study evaluated the biomechanical behavior of short dental implants with different heights of residual bone and compared it with that of standard dental implants in 13 mm or less of residual bone by means of finite element analysis. Materials and Methods: It was assumed that the maxillary first and second molars had been replaced with splinted cast gold crowns supported by two implants. A total of five posterior edentulous maxilla models were fabricated with various residual bone heights (13 mm, 7 mm, 6 mm, 5 mm, and 4 mm). Residual bone height was 13 mm in the group 1 model (control) and 7, 6, 5, and 4 mm in group 2-1, group 2-2, group 2-3, and group 2-4 models, respectively. In the group 1 model, two identical implants (4.5 × 11 mm) and abutments (6 × 2.5 mm) were placed. In the group 2 models, two identical wide/short implants (6 × 5.7 mm) and abutments (6 × 5 mm) were placed. Off-axis (30 degrees) loading of 187 N was applied to the central fossae of the two implant-supported crowns. Results: Maximum von Mises stresses in crestal cortical bone were lower in group 2 models than in the group 1 model. Conclusion: This numeric simulation confirmed that, without maxillary sinus bone graft, more effective stress distribution could be obtained in 4, 5, 6, or 7 mm of residual bone with short dental implants than in 13 mm of residual bone with standard dental implants.

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