Custom-Made Titanium Miniplates Associated With Ultrahigh-Molecular-Weight Polyethylene Graft in Orthognathic Surgery: An Adjunct to Maxillary Advancement

Júnior, José Thiers Carneiro; Moraes, Paulo Hemerson de; Oliveira, Douglas Voss de; Carneiro, Nayara Cristina Monteiro

doi:10.1016/j.joms.2018.01.018

Cited by 6 publications

(8 citation statements)

References 10 publications

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“…A pioneering multicenter study, using computer-aided design/computer-aided manufacturing (CAD/CAM) guides, demonstrated that customized guides have greater surgical accuracy than the conventional method [4,5,6]. Several studies have performed virtual guide modeling with CAD/CAM technology and 3D printing of customized plates and guides using biocompatible photoactivated resin or titanium [1][2][3][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. The translation of virtually planned movements to the operative field is more accurate with the use of these customized titanium devices.…”

Section: Introductionmentioning

confidence: 99%

“…The translation of virtually planned movements to the operative field is more accurate with the use of these customized titanium devices. Custom-made miniplates are still state-of-the-art in the field of orthognathic surgery [6,7,8]. However, the logistics, the time required for industrial production, and the high manufacturing costs, which are rarely covered by health plans, may limit surgeons' access to customized titanium miniplates [6].…”

Section: Introductionmentioning

confidence: 99%

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A CAD/CAM Maxillary Guiding for Osteotomy, Drilling and Maxillary Positioning in Orthognathic Surgery: Accuracy Analysis.

Oliveira,

Normando,

Assis

et al. 2024

Braz. arch. biol. technol.

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Resin CAD/CAM guides for the maxilla are widely used and differ from custom miniplates essentially in that they do not have drill guides for screw fixation and use miniplates that must be modeled in surgery. To solve this problem, we have developed a new Maxillary guide bone-supported indicated for osteotomy, drilling, and maxillary positioning in orthognathic surgeries using standard modeled miniplates. In this study were included sixteen patients who had bimaxillary orthognathic surgery. The technique for its manufacturing is described, and its surgical accuracy was analyzed using the planning image (CT0) superimposed on the computed tomography scan post-treatment (CT1). The mean positional differences between pre-treatment and post-treatment were obtained Tri-dimensionally on the X, Y, and Z axes using four landmarks points: one bone (SNA), and three dentals (CI, RM, and LM). At Sixty-four points analyzed on the X axis of the four landmarks, only eight points were greater than 1 mm; 87.5 % of the deviations were <1 mm. For the Y-axis 78.12% of the deviations were <1 mm and for Z-axis, 76.56 %. The mean and standard deviation of the error was 0.36 (0.28) mm, 0.93 (1.07) mm, and 0.73 (0.86) mm on the X, Y, and Z axes, HIGHLIGHTS• Proposal of a new CAD/CAM guide technique for osteotomy, drilling, and maxillary positioning.• Standard miniplate modeled on 3D print was used similarly a custom miniplate.• Cutting and drill resin guide was modeled virtually using a 3D scan of the drilled model surface.• The surgical accuracy test of the proposed technique supports its use.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A CAD/CAM Maxillary Guiding for Osteotomy, Drilling and Maxillary Positioning in Orthognathic Surgery: Accuracy Analysis.

Oliveira,

Normando,

Assis

et al. 2024

Braz. arch. biol. technol.

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“…Ultra-high molecular weight polyethylene (UHMWPE) is a bioinert polymer that has been used in orthopedics as bearing material in artificial joints and in metal-on-UHMWPE articulation. Since the 1990s, owing to its combination of excellent bioinertness and mechanical performance, UHMWPE has attracted permanent interest as a suitable solution in the reconstructive surgery of cartilage in hip and knee joints [1] and in intervertebral discs [2], as well as in oral and maxillofacial surgery [3]. The current practice of implant fabrication involves hot molding and further subtractive mechanical shaping of bulk UHMWPE.…”

Section: Introductionmentioning

confidence: 99%

Porous Open-Сell UHMWPE: Experimental Study of Structure and Mechanical Properties

et al. 2019

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Ultra-high molecular weight polyethylene (UHMWPE) is a bioinert polymer that is widely used as bulk material in reconstructive surgery for structural replacements of bone and cartilage. Porous UHMWPE can be used for trabecular bone tissue replacement, and it can be used in living cell studies as bioinert 3D substrate permeable to physiological fluids. It is important to develop techniques to govern the morphology of open-cell porous UHMWPE structures (pore size, shape, and connectivity), since this allows control over proliferation and differentiation in living cell populations. We report experimental results on the mechanical behavior of porous open-cell UHMWPE obtained through sacrificial removal (desalination) of hot-molded UHMWPE-NaCl powder mixtures with pore sizes in the range 75 µm to 500 µm. The structures were characterized using SEM and mechanically tested under static compression and dynamic mechanical analysis (DMA), bending, and tensile tests. Apparent elastic modulus and complex modulus were in the range of 1.2 to 2.5 MPa showing a weak dependence on cell size. Densification under compression caused the apparent elastic modulus to increase to 130 MPa.

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“…Yet and optimally, one should try to achieve patient-specific reconstructive plates with proper screw angulation and implant positions readily in place. The utilization of patient-specific 3D printed plates (PSPP) and surgical templates have already been applied for various oral and maxillofacial surgery procedures with positive feedback, such as orthognathic surgery, trauma surgery, distraction osteogenesis, cranioplasty, tumor resection surgery 8–12 . Although it may provide the surgeon with better accuracy, save time and help to reduce complications, one should bear in mind that it may cost more money and need more effort preoperatively 13 …”

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confidence: 99%

Application of Three-Dimensional Printed Customized Surgical Plates for Mandibular Reconstruction: Report of Consecutive Cases and Long-Term Postoperative Evaluation

Dessel

Bila

et al. 2021

Journal of Craniofacial Surgery

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Custom-Made Titanium Miniplates Associated With Ultrahigh-Molecular-Weight Polyethylene Graft in Orthognathic Surgery: An Adjunct to Maxillary Advancement

Cited by 6 publications

References 10 publications

A CAD/CAM Maxillary Guiding for Osteotomy, Drilling and Maxillary Positioning in Orthognathic Surgery: Accuracy Analysis.

A CAD/CAM Maxillary Guiding for Osteotomy, Drilling and Maxillary Positioning in Orthognathic Surgery: Accuracy Analysis.

Porous Open-Сell UHMWPE: Experimental Study of Structure and Mechanical Properties

Application of Three-Dimensional Printed Customized Surgical Plates for Mandibular Reconstruction: Report of Consecutive Cases and Long-Term Postoperative Evaluation

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