COMPARISON OF ONE– AND TWO–PIECE PATIENT SPECIFIC IMPLANTS FOR VARIOUS MOVEMENTS OF MAXILLA IN LEFORT I SURGERY: A FINITE ELEMENT ANALYSIS

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Makale detayları

COMPARISON OF ONE– AND TWO–PIECE PATIENT SPECIFIC IMPLANTS FOR VARIOUS MOVEMENTS OF MAXILLA IN LEFORT I SURGERY: A FINITE ELEMENT ANALYSIS

Yazarlar:

Onur Koç

Yayıncı:

Hacettepe University

Ana Başlıklar:

Oral and Maxillofacial Surgery

Dergi:

Clinical Dentistry and Research Vol.49 Issue 2, pp.64-70

Belge Tipi:

Makale

Yayın Tarihi:

8/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001357201

pISSN:

2146-3972

Anahtar kelimeler:

Özet:

 Background and Aims: The present finite element analysis FEA was performed to determine whether onepiece patient specific implants PSI are superior to twopiece implants in terms of the distribution of occlusal forces and limiting translocation during the healing period of LeFort I surgery. Materials and Methods: The models were generated for 5 mm advancement, 5 mm setback, 5 mm impaction, and 5 mm downward positioning of the maxilla, following contact analysis of the screws, cortical bone, and cancellous bone. One and twopiece PSIs were inserted into the aforementioned four models, and a vertical force of 98 N was applied bilaterally to the premolar and molar teeth. The von Mises stress was evaluated for the PSIs, screws, and adjacent bones. Translocation amounts and patterns were evaluated for the maxillary components of the models. Results: The maximum von Mises stresses of onepiece PSIs for the advancement, setback, downward positioning, and impaction models were 233 MPa, 248 MPa, 263 MPa, and 260 MPa, respectively. The maximum von Mises stresses of twopiece PSIs for the advancement, setback, downward positioning, and impaction models were 248 MPa, 256 MPa, 250 MPa, and 270 MPa, respectively. Conclusions: The stress distribution on the PSIs did not differ between the one-piece and twopiece PSIs for all movement models. Twopiece PSIs can be preferred over onepiece PSIs for increased adaptability without loss in strength.

 Background and Aims: The present finite element analysis FEA was performed to determine whether onepiece patient specific implants PSI are superior to twopiece implants in terms of the distribution of occlusal forces and limiting translocation during the healing period of LeFort I surgery. Materials and Methods: The models were generated for 5 mm advancement, 5 mm setback, 5 mm impaction, and 5 mm downward positioning of the maxilla, following contact analysis of the screws, cortical bone, and cancellous bone. One and twopiece PSIs were inserted into the aforementioned four models, and a vertical force of 98 N was applied bilaterally to the premolar and molar teeth. The von Mises stress was evaluated for the PSIs, screws, and adjacent bones. Translocation amounts and patterns were evaluated for the maxillary components of the models. Results: The maximum von Mises stresses of onepiece PSIs for the advancement, setback, downward positioning, and impaction models were 233 MPa, 248 MPa, 263 MPa, and 260 MPa, respectively. The maximum von Mises stresses of twopiece PSIs for the advancement, setback, downward positioning, and impaction models were 248 MPa, 256 MPa, 250 MPa, and 270 MPa, respectively. Conclusions: The stress distribution on the PSIs did not differ between the one-piece and twopiece PSIs for all movement models. Twopiece PSIs can be preferred over onepiece PSIs for increased adaptability without loss in strength.

 Background and Aims: The present finite element analysis FEA was performed to determine whether onepiece patient specific implants PSI are superior to twopiece implants in terms of the distribution of occlusal forces and limiting translocation during the healing period of LeFort I surgery. Materials and Methods: The models were generated for 5 mm advancement, 5 mm setback, 5 mm impaction, and 5 mm downward positioning of the maxilla, following contact analysis of the screws, cortical bone, and cancellous bone. One and twopiece PSIs were inserted into the aforementioned four models, and a vertical force of 98 N was applied bilaterally to the premolar and molar teeth. The von Mises stress was evaluated for the PSIs, screws, and adjacent bones. Translocation amounts and patterns were evaluated for the maxillary components of the models. Results: The maximum von Mises stresses of onepiece PSIs for the advancement, setback, downward positioning, and impaction models were 233 MPa, 248 MPa, 263 MPa, and 260 MPa, respectively. The maximum von Mises stresses of twopiece PSIs for the advancement, setback, downward positioning, and impaction models were 248 MPa, 256 MPa, 250 MPa, and 270 MPa, respectively. Conclusions: The stress distribution on the PSIs did not differ between the one-piece and twopiece PSIs for all movement models. Twopiece PSIs can be preferred over onepiece PSIs for increased adaptability without loss in strength.

 Background and Aims: The present finite element analysis FEA was performed to determine whether onepiece patient specific implants PSI are superior to twopiece implants in terms of the distribution of occlusal forces and limiting translocation during the healing period of LeFort I surgery. Materials and Methods: The models were generated for 5 mm advancement, 5 mm setback, 5 mm impaction, and 5 mm downward positioning of the maxilla, following contact analysis of the screws, cortical bone, and cancellous bone. One and twopiece PSIs were inserted into the aforementioned four models, and a vertical force of 98 N was applied bilaterally to the premolar and molar teeth. The von Mises stress was evaluated for the PSIs, screws, and adjacent bones. Translocation amounts and patterns were evaluated for the maxillary components of the models. Results: The maximum von Mises stresses of onepiece PSIs for the advancement, setback, downward positioning, and impaction models were 233 MPa, 248 MPa, 263 MPa, and 260 MPa, respectively. The maximum von Mises stresses of twopiece PSIs for the advancement, setback, downward positioning, and impaction models were 248 MPa, 256 MPa, 250 MPa, and 270 MPa, respectively. Conclusions: The stress distribution on the PSIs did not differ between the one-piece and twopiece PSIs for all movement models. Twopiece PSIs can be preferred over onepiece PSIs for increased adaptability without loss in strength.

Makale detayları

COMPARISON OF ONE– AND TWO–PIECE PATIENT SPECIFIC IMPLANTS FOR VARIOUS MOVEMENTS OF MAXILLA IN LEFORT I SURGERY: A FINITE ELEMENT ANALYSIS

Yazarlar:

Onur Koç

Yayıncı:

Hacettepe University

Ana Başlıklar:

Oral and Maxillofacial Surgery

Dergi:

Clinical Dentistry and Research Vol.49 Issue 2, pp.64-70

Belge Tipi:

Makale

Yayın Tarihi:

8/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001357201

pISSN:

2146-3972

Finite Element Analysis

Lefort I

Patient Specific Implant

Stress Distribution

Von Mises Stress

Sayı

Makale detayları

COMPARISON OF ONE– AND TWO–PIECE PATIENT SPECIFIC IMPLANTS FOR VARIOUS MOVEMENTS OF MAXILLA IN LEFORT I SURGERY: A FINITE ELEMENT ANALYSIS

Yazarlar: Onur Koç

Yayıncı: Hacettepe University

Ana Başlıklar: Oral and Maxillofacial Surgery

Dergi: Clinical Dentistry and Research Vol.49 Issue 2, pp.64-70

Belge Tipi: Makale

Yayın Tarihi: 8/2025

Belge Dili: İngilizce

Document ID (Org No.): 2001357201

pISSN: 2146-3972

Finite Element Analysis

Lefort I

Patient Specific Implant

Stress Distribution

Von Mises Stress

Sayı

Yazarlar:

Onur Koç

Yayıncı:

Hacettepe University

Ana Başlıklar:

Oral and Maxillofacial Surgery

Dergi:

Clinical Dentistry and Research Vol.49 Issue 2, pp.64-70

Belge Tipi:

Makale

Yayın Tarihi:

8/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001357201

pISSN:

2146-3972