Comparative Evaluation of the Mechanical Properties of Resorbable and Titanium Miniplates Used for Fixation of Mandibular Condyle Fractures

Cansız, Erol; Doğru, Suzan Cansel; Arslan, Yunus Ziya

doi:10.1142/s0219519415400321

Cited by 5 publications

(2 citation statements)

References 20 publications

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“…Based on the literature reviewed, the load of 62.8 N was applied with negative z-direction due to the consideration of the load applied to the fractured mandible (Arbag et al, 2008). These loads applied can also be supported by similar research done by Cansiz et al (2015) in the literature review. Figure 2 shows the load applied to the incisor bone.…”

Section: Load Applied On the Mandible Bonementioning

confidence: 95%

Finite element analysis (FEA) of polylactic acid/polypropylene carbonate (PLA/PPC) blends fixation plate for craniomaxillofacial surgery

Haneef

Shaffiar

Buys

et al. 2019

IJSI

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Purpose The internal fixation plate of bone fractures by using polylactic acid (PLA) has attracted the attention of many researchers, as it is biodegradable and biocompatible to the human body. However, its brittleness has led to implant fracture. On the contrary, polypropylene carbonate (PPC), which is also biodegradable and biocompatible, has an excellent elongation at break. The purpose of this paper is to compare the PLA fixation plate with the new fixation plate made up of PLA/PPC blends by using finite element analysis (FEA). Design/methodology/approach The mandible bone from CT data set and fixation plate was designed by using the MIMICS, Amira and Solidworks softwares. Abaqus software was used for FEA of PLA/PPC fixation plate applied on the fractured mandible bone. A model of mandibular bone with a fracture in the body was subjected to incisor load. The analysis was run to determine the von Mises stress, elongation of the fixation plate and the displacement of the fractured gap of PLA/PPC blends fixation plate. Findings The von Mises stress predicted that all the blend compositions were safe to be used as a fixation plate since the stress values were less than the yield strength. In addition, the stress value of the fixation plate was gradually decreased up to 20 percent when the amount of PPC increased to 30 percent. This indicates that the stress shielding effect was successfully reduced. The elongation of the fixation plate was gradually increased from 11.54 to 12.55 µm as the amount of PPC in the blends increased from 0 to 30 percent, thereby illustrating that the flexibility of the fixation plate was improved by the addition of PPC. Finally, the measured displacement of the fractured gap for all compositions of PLA/PPC blends fixation plate is less than 150 µm, which proves the likely success of fracture fixation by using the PLA/PPC blends. Research limitations/implications An optimum solution of PLA/PPC blends and another new material such as compatibilizer need to be introduced in the blends in order to improve the performance of PLA/PPC blends as a new material for a fixation plate. Besides, by using the same method of producing PLA/PPC blends, longer durations for in vitro degradation of PLA/PPC blends are essential to further understand the degradation behavior of the blends applied in the human body. Finally, it is also important to further test the mechanical strength of PLA/PPC blends during the degradation period to know the current strength of the implant in the healing process of the bone. Practical implications PLA fixation plate and screw can commercially be used in CMF surgery since they reduce cost because of the elimination of secondary surgery to remove the fixation plate and screw after the healing process. Social implications It is hoped that the advantages of this research will ensure the market of PLA product to continue expanding in medical application. Originality/value This study is one of the alternative ways for the biomedical researchers to improve the elongation break of PLA. Currently, many researchers focus on polymeric materials such as PLA, poly(glycolic) acid and polydioxanone blends, which were extensively being used in CMF surgery. However, the work on PLA/PPC blends to be used as one of the materials for the CMF fixation plate is very limited, if any. PPC, the proposed material for this research, will improve the mechanical performance of PLA fixation plate and screw to become more sustainable and flexible when applied on human mandible bone.

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Section: Load Applied On the Mandible Bonementioning

confidence: 95%

Finite element analysis (FEA) of polylactic acid/polypropylene carbonate (PLA/PPC) blends fixation plate for craniomaxillofacial surgery

Haneef

Shaffiar

Buys

et al. 2019

IJSI

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“…While construction of the mandible models, predefined Hounsfield unit (HU) thresholds for bone structure (lower limit: 226 HU and upper limit: 3071 HU) were defined to distinguish the bone tissues from other body tissues. 22,23 The 3D models of the dental implant, abutment, and screw, which are made of titanium, and prosthetic bar, which is made of metal-reinforced ceramic, were created using computer-aided design software (SolidWorks, Dassault Syste`mes SolidWorks Corp., Waltham, MA, USA) ( Figure 1). The prosthetic bar was designed as a solid body (5 mm in height and 5.5 mm in thickness) consistent with the geometry of the mandibles.…”

Section: Modeling Of the Mandibles And Dental Instrumentsmentioning

confidence: 99%

Biomechanical comparison of implantation approaches for the treatment of mandibular total edentulism

Arslan

Karabulut

Kahya

et al. 2020

Proc Inst Mech Eng H

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Applying four anterior implants placed vertically or tilted in the mandible is considered to provide clinically reasonable results in the treatment of mandibular posterior edentulism. It is also reported that a combination of four anterior and two short posterior implants can be an alternative approach for the rehabilitation of severe atrophy cases. In this study, we aimed to evaluate the biomechanical responses of three different implant placement configurations, which represent the clinical options for the treatment of mandibular edentulism. Three-dimensional models of the mandible, prosthetic bar, dental implant, abutment, and screw were created. Finite element models of the three implant configurations (Protocol 1: Four anterior implants, Protocol 2: Four anterior and two short posterior implants, Protocol 3: Two anterior and two tilted posterior implants: All-on-4™ concept) were generated for 10 patients and analyzed under different loading conditions including chewing, biting, and impact forces. Protocol 2 led to the lowest stress concentrations over the mandible among the three protocols ( p < 0.016). Protocol 2 resulted in significantly lower stresses than Protocol 3 and Protocol 1 over prosthetic bars under chewing forces ( p < 0.016). None of the implant placement protocols consistently exhibited the lowest stress distribution over abutments. The lowest stresses over dental implants under the chewing, biting, and impact forces were obtained in Protocol 1, Protocol 2, and Protocol 3, respectively ( p < 0.016). Protocol 3 was the best option to obtain the lowest stress values over the screws under all types of loading conditions ( p < 0.016). In conclusion, Protocol 2 was biomechanically more ideal than Protocol 1 and Protocol 3 to manage the posterior edentulism.

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Computer-Aided Design of Subject-Specific Dental Instruments for Preoperative Virtual Planning in Orthognathic Surgery

2019

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Comparative Evaluation of the Mechanical Properties of Resorbable and Titanium Miniplates Used for Fixation of Mandibular Condyle Fractures

Cited by 5 publications

References 20 publications

Finite element analysis (FEA) of polylactic acid/polypropylene carbonate (PLA/PPC) blends fixation plate for craniomaxillofacial surgery

Finite element analysis (FEA) of polylactic acid/polypropylene carbonate (PLA/PPC) blends fixation plate for craniomaxillofacial surgery

Biomechanical comparison of implantation approaches for the treatment of mandibular total edentulism

Computer-Aided Design of Subject-Specific Dental Instruments for Preoperative Virtual Planning in Orthognathic Surgery

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