Reduction Malarplasty Using Customized Surgical Stent Based on 3D Virtual Surgery, CAD/CAM, and 3D Printing Technology

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Sung-Ho Ha ◽  
Sungyoung Jung ◽  
Jin-Young Choi
Keyword(s):  
3D Printing ◽  
Virtual Surgery ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Reduction Malarplasty ◽  
Cad Cam

scholarly journals Comparison between Additive and Subtractive CAD-CAM Technique to Produce Orthognathic Surgical Splints: A Personalized Approach

2020 ◽  
Vol 10 (4) ◽  
pp. 273
Author(s):  
Giuseppe Palazzo ◽  
Vincenzo Ronsivalle ◽  
Giacomo Oteri ◽  
Antonino Lo Giudice ◽  
Corrado Toro ◽  
...  
Keyword(s):  
3D Printing ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Deviation Analysis ◽  
Skeletal Malocclusion ◽  
Cad Cam ◽  
Dental Models ◽  
Student’S T ◽  
Personalized Approach ◽  
Aesthetic Characteristics

The present study aimed to evaluate the accuracy of digitally designed surgical splints generated with milling technology (material subtractive procedure) and with 3D printing technology (material additive procedure) through a customized approach in the planning of surgical orthognathic splints. Cone beam computed tomography (CBCT) examinations and scanned dental models of 10 subjects who had required surgical treatment of skeletal malocclusion were included. Simulation of the orthognathic surgery was performed according to dento-skeletal and aesthetic characteristics of the subjects and the visual treatment objective (VTO), using Dolphin3D software (Dolphin Imaging, version 11.0, Chatsworth, CA, USA). Afterward, the Appliance Designer software (3Shape A/S, Copenhagen, Denmark) was used to digitally design the surgical splints that were generated twice using laser stereolithography technology (DWS 0.29D, DWS, Vicenza, Italy) and milling technology (Sirona inLab MC X5). Finally, each physical splint was digitalized using a desktop scanner (D500 3D, 3Shape A/S, Copenhagen, Denmark) in order to perform deviation analysis using the original project as a reference. The relative percentage of matching (trueness) was calculated (Geomagic Control X software (3D Systems, version 2018.1.1, 3D Systems, Rock Hill, SC, USA). An Independent Student’s t-test was used to statistically analyze the data. The milled splints showed a lower value of root to mean square (RMS) relative to the original project (0.20 mm ± 0.018) compared to the prototyped splints (0.31 ± 0.021) (p < 0.001). According to the present findings, surgical splints generated with milling technology present higher trueness compared with 3D printing technology.

scholarly journals Workflow of CAD / CAM Scoliosis Brace Adjustment in Preparation Using 3D Printing

2017 ◽  
Vol 11 (1) ◽  
pp. 44-51 ◽  
Author(s):  
Hans-Rudolf Weiss ◽  
Nicos Tournavitis ◽  
Xiaofeng Nan ◽  
Maksym Borysov ◽  
Lothar Paul
Keyword(s):  
3D Printing ◽  
Computer Aided Design ◽  
Short Communication ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Computer Aided ◽  
Cad Cam ◽  
Aided Design ◽  
Cam Software ◽  
Made In

Background: High correction bracing is the most effective conservative treatment for patients with scoliosis during growth. Still today braces for the treatment of scoliosis are made by casting patients while computer aided design (CAD) and computer aided manufacturing (CAM) is available with all possibilities to standardize pattern specific brace treatment and improve wearing comfort. Objective: CAD / CAM brace production mainly relies on carving a polyurethane foam model which is the basis for vacuuming a polyethylene (PE) or polypropylene (PP) brace. Purpose of this short communication is to describe the workflow currently used and to outline future requirements with respect to 3D printing technology. Method: Description of the steps of virtual brace adjustment as available today are content of this paper as well as an outline of the great potential there is for the future 3D printing technology. Results: For 3D printing of scoliosis braces it is necessary to establish easy to use software plug-ins in order to allow adding 3D printing technology to the current workflow of virtual CAD / CAM brace adjustment. Textures and structures can be added to the brace models at certain well defined locations offering the potential of more wearing comfort without losing in-brace correction. Conclusions: Advances have to be made in the field of CAD / CAM software tools with respect to design and generation of individually structured brace models based on currently well established and standardized scoliosis brace libraries.

scholarly journals DETERMINATION OF ERRORS IN THE MANUFACTURING TECHNOLOGY OF OCCLUSIVE SPLINTS FOR THE TREATMENT OF TMJ DISEASES

2020 ◽  
Vol 16 (2) ◽  
pp. 129-133
Author(s):  
Mikhail Saakyan ◽  
Ol'ga Uspenskaya ◽  
Sergey Ryabov ◽  
Aleksey Aleksandrov
Keyword(s):  
3D Printing ◽  
Temporomandibular Joint ◽  
High Precision ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Occlusal Splints ◽  
Lower Accuracy ◽  
Digital Scanning ◽  
Cad Cam ◽  
Relationship Of

Subject. For the treatment of diseases of the temporomandibular joint, occlusal splints are used, in the manufacture of which different methods are used, which have their negative and positive properties. 3D printing technology allows the manufacture of occlusal splints with high precision fit to the dentition and with uniform occlusal contacts with respect to antagonist teeth. The goal is to study errors in the technology of manufacturing occlusal splints for the treatment of patients with diseases of the temporomandibular joint. Methodology. Thirty patients with distal displacement of the heads of the temporomandibular joint in the range of 1-1.5 mm were examined. Patients were diagnosed with Angle Grade 2. The methods used were tele-radiography, 3D computed tomography, and laboratory scanning of jaw models. Results. Errors were revealed in the manufacture of occlusal tires using digital scanning in the EXO-CAD program, various features of adaptation to occlusal tires obtained using 3D printing and cad-cam milling. Findings. 3D printing technology allows the manufacture of occlusal splints with high precision fit to the dentition with uniform occlusal contacts with respect to antagonist teeth. The technology for milling occlusal tires gives an advantage in their strength compared to 3D printing technology. However, the mouthguards made by technology are inferior to mouthguards made on a 3D printer in terms of elasticity of fit to the dentition, which can cause discomfort and pain during the use of milled mouthguards. Occlusal tires made by cold polymerization have lower accuracy of fit to the dentition and require correction when fitting and checking the occlusal relationship of the dentition.

Capability of 3D Printing Technology in Producing Molar Teeth Prototype

2020 ◽  
Vol 8 (2) ◽  
pp. 64
Author(s):  
Mohd Nazri Ahmad ◽  
Ahmad Afiq Tarmeze ◽  
Amir Hamzah Abdul Rasib
Keyword(s):  
3D Printing ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Molar Teeth

Accuracy of Geometry of Plastic Gear Produced with 3D Printing Technology

2020 ◽  
Vol 14 (7) ◽  
pp. 470
Author(s):  
Jarosław Kotliński ◽  
Karol Osowski ◽  
Zbigniew Kęsy ◽  
Andrzej Kęsy
Keyword(s):  
3D Printing ◽  
Printing Technology ◽  
3D Printing Technology

Comparative characteristics of provisional crowns made by CAD/CAM milling and 3D printing

2020 ◽  
pp. 45-49
Author(s):  
A.V. Stomatov ◽  
D.V. Stomatov ◽  
P.V. Ivanov ◽  
V.V. Marchenko ◽  
E.V. Piitsky ◽  
...  
Keyword(s):  
3D Printing ◽  
Good Alternative ◽  
Digital Model ◽  
Dental Practice ◽  
Production Methods ◽  
Automated Production ◽  
3D Printing Technology ◽  
Cad Cam ◽  
Milling Method ◽  
Technology Comparison

In this work, the authors studied and compared the two main methods used in dental practice for the automated production of orthopedic structures: the widely used CAD / CAM milling method and the 3D printing technology. As an object of research, temporary crowns were used, which were made on the basis of the same digital model: a) by the method of CAD / CAM milling from polymethylmethacrylate disks; b) by 3D printing from photopolymer resin based on LCD technology. Comparison of production methods and finished designs was carried out according to the following characteristics: strength, durability, aesthetic qualities, accuracy of orthopedic designs, etc. According to the results of the study, it was concluded that 3D printing can be a good alternative to CAD / CAM milling in solving problems of temporary prosthetics.

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