scholarly journals The stress analysis on distal-extension removable partial denture using finite element method. Part 2. The stress distribution on different splinting.

1987 ◽  
Vol 31 (4) ◽  
pp. 853-867
Author(s):  
Takao Kawasaki ◽  
Tohru Yamada ◽  
Akiyoshi Nogawa ◽  
Mamoru Hoshii ◽  
Keiichi Miki
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Stress Analysis ◽  
Removable Partial Denture ◽  
Partial Denture ◽  
Distal Extension ◽  
Element Method

scholarly journals Finite Element Method Analysis of the Stress Distribution to Supporting Tissues in a Class IV Aramany Removable Partial Denture (Part I: The Teeth and Periodontal Ligament)

2008 ◽  
Vol 9 (6) ◽  
pp. 65-72 ◽  
Author(s):  
Jafar Gharechahi ◽  
Esmael Sharifi ◽  
Saeid Nosohian ◽  
Nafiseh Asadzadeh Aghdaee
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Periodontal Ligament ◽  
Maximum Stress ◽  
Removable Partial Denture ◽  
Partial Denture ◽  
Anterior Teeth ◽  
Class Iv ◽  
Element Method

Abstract Aim Special care is required in the fabrication of a Class IV Aramany removable partial denture (RPD) in order to minimize the stress distribution to supporting tissues. Using the finite element method, the aim of this study was to analyze the distribution stress to supporting tissues when a Class IV Aramany RPD is worn. Methods and Materials Three RPD designs with circumferential cast retainers were examined in this study. These varied in retainer configuration which included: buccal retention and palatal reciprocation (P1); palatal retention and buccal reciprocation (P2); and buccal and palatal retention (P3). The stress distribution in models using the Von Mises criteria was analyzed for each RPD design when placed under a 53N load from three different directions that included: vertical to the posterior teeth of the RPD (F1); at a 33° angle to the posterior teeth of the RPD (F2); and vertically on the anterior teeth of the RPD (F3). Results The maximum stress in teeth (91.3 Mpa) was generated when a 53N force was applied vertically from anterior teeth of RPD (F3) using buccal and palatal retention (P3). The maximum stress (0.494 Mpa) in the periodontal ligament (PDL) was also generated under the same conditions using the F3 load on the P3 design. Conclusion In all three directions of force application RPDs with buccal and palatal retention induced more stress in the tooth and the PDL with the maximum stress generated when the force was applied vertically to the anterior teeth. The axis of rotation can be changed by altering the RPD design as well as the direction and amount of force applied to the teeth. Citation Gharechahi J, Sharifi E, Nosohian S, Aghdaee NA. Finite Element Method Analysis of the Stress Distribution to Supporting Tissues in a Class IV Aramany Removable Partial Denture (Part I: The Teeth and Periodontal Ligament). J Contemp Dent Pract 2008 September; (9)6:065-072.

scholarly journals Finite Element Method Analysis of Stress Distribution to Supporting Tissues in a Class IV Aramany Removable Partial Denture (Part II: Bone and Mucosal Membrane)

2008 ◽  
Vol 9 (7) ◽  
pp. 49-56 ◽  
Author(s):  
Jafar Gharechahi ◽  
Esmael Sharifi ◽  
Saeid Nosohian ◽  
Nafiseh Asadzadeh Aghdaee
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Cancellous Bone ◽  
Removable Partial Denture ◽  
Posterior Teeth ◽  
Mucosal Membrane ◽  
Method Analysis ◽  
Class Iv ◽  
Element Method

Abstract Aim One of the most important issues in the design of removable partial dentures (RPD) is the location of retentive arms to provide sufficient support. This is a critical factor in patients with less supporting tissue and abutment teeth. Patients classified as Class IV Aramany need special attention in this area of RPD design to minimize the stress distribution in bone and mucosal membrane. Using the finite element method, the aim of this study was to analyze the distribution stress to supporting tissues when a Class IV Aramany RPD is worn. The data presented in this report are the effects of the stress on bone and mucosal membranes. Results on teeth and the periodontal ligament have been previously reported. Methods and Materials Three dimensional finite element models were constructed using normal dimensions. Exact physiology and morphology of teeth and the remaining palate were simulated to that of a maxillectomy patient. Three RPD designs with circumferential cast retainers were examined: buccal retention and palatal reciprocation (P1); palatal retention and buccal reciprocation (P2); and buccal and palatal retention (P3). After completion of the models and remaining palate, each RPD design was loaded under 53N and stress was applied in three different directions: vertical to the posterior teeth (premolar and first molars) of the RPD (F1); at a 33° angle to the posterior teeth (premolar and first molars) of the RPD (F2); and vertically on the anterior teeth (central incisors) of the RPD (F3). The stress distribution in the RPD models on cortical and cancellous bone and the mucosal membrane was analyzed using von Mises criterion. Results The maximum tension in cortical bone (70.84 Mpa) was observed when a 53N force was applied in a vertical direction to posterior teeth (F2) using buccal and palatal retention (P3). Minimum tension (15.73 Mpa) in cortical bone was observed using the F3 load on the P2 design. Similar results were seen in cancellous bone, with the highest stress (8.01 Mpa) observed using F2 load on the P3 design and the lowest stress (3.04 Mpa) observed using the F3 load on the P2 design. For mucosal membrane, the maximum (3.57 Mpa) and minimum (3.05 Mpa) stress was observed using the F3 load on the P3 design and the F1 load on the P2 design, respectively. The average stress in all RPD designs was 3 Mpa. Conclusion The design demonstrating the least tension in cortical and cancellous bone and mucosal membrane was the P2 design, a RPD with palatal retention and buccal reciprocation. Clinical Significance Palatal retention and buccal reciprocation (P2 design) is recommended for patients with maxillofacial RPDs. Citation Gharechahi J, Sharifi E, Nosohian S, Aghdaee NA. Finite Element Method Analysis of Stress Distribution to Supporting Tissues in a Class IV Aramany Removable Partial Denture (Part II: Bone and Mucosal Membrane). J Contemp Dent Pract 2008 November; (9)7:049-056.

scholarly journals Stress Distribution in Tooth Supported Removable Bridge with Long Saddle. Part 1. Stress Analysis at Abutment Teeth and Alveolar Bone by 2-Dimensional Finite Element Method.

1998 ◽  
Vol 42 (5) ◽  
pp. 823-831
Author(s):  
Yoshihisa Inoue ◽  
Akihiro Kuroiwa ◽  
Akira Ogata ◽  
Akira Suzuki ◽  
Takafumi Ohno ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Stress Analysis ◽  
Alveolar Bone ◽  
Dimensional Finite Element ◽  
Abutment Teeth ◽  
Element Method

scholarly journals Dental Implants using Bioactive Glass-Stress Analysis by the Finite Element Method. Part 3. Stress Distribution of Root Dental Implants and Alveolar Bone.

1993 ◽  
Vol 37 (2) ◽  
pp. 401-406
Author(s):  
Izumi Sasajima ◽  
Tsukasa Shioyama ◽  
Yasushi Kitamura ◽  
Mikako Aoki ◽  
Tetsuo Yamamori ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Bioactive Glass ◽  
Stress Analysis ◽  
Dental Implants ◽  
Alveolar Bone ◽  
The Finite Element Method ◽  
Element Method

Comparison of Stress Distribution in Alveolar Bone with Different Implant Diameters and Vertical Cantilever Length via the Finite Element Method

2019 ◽  
Vol 29 (1) ◽  
pp. 37-43 ◽  
Author(s):  
Ashraf Sayyedi ◽  
Mahsa Rashidpour ◽  
Amir Fayyaz ◽  
Niloufar Ahmadian ◽  
Mohammad Dehghan ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Alveolar Bone ◽  
The Finite Element Method ◽  
Cantilever Length ◽  
Element Method
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