Startseite RapidNAM: generative manufacturing approach of nasoalveolar molding devices for presurgical cleft lip and palate treatment
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RapidNAM: generative manufacturing approach of nasoalveolar molding devices for presurgical cleft lip and palate treatment

Veröffentlicht/Copyright: 9. Februar 2017
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Biomedical Engineering / Biomedizinische Technik
Aus der Zeitschrift Biomedical Engineering / Biomedizinische Technik Band 62 Heft 4

Abstract

Nasoalveolar molding (NAM) is an accepted treatment strategy in presurgical cleft therapy. The major drawbacks of the treatment listed in the literature relate to the time of the treatment and the coordination of the required interdisciplinary team of therapists, parents, and patients. To overcome these limitations, we present the automated RapidNAM concept that facilitates the design and manufacturing process of NAM devices, and that allows the virtual modification and subsequent manufacture of the devices in advance, with a growth prediction factor adapted to the patient’s natural growth. The RapidNAM concept involves (i) the prediction of three trajectories that envelope the fragmented alveolar segments with the goal to mimic a harmonic arch, (ii) the extrusion from the larger toward the smaller alveolar segment along the envelope curves toward the harmonic upper alveolar arch, and (iii) the generation of the NAM device with a ventilation hole, fixation pin, and fixation points for the nasal stents. A feasibility study for a vector-based approach was successfully conducted for unilateral and bilateral cleft lip and palate (CLP) patients. A comparison of the modified target models with the reference target models showed similar results. For further improvement, the number of landmarks used to modify the models was increased by a curve-based approach.

Keywords: envelope curves; growth prediction factor; nasal stent; nasoalveolar molding; virtual planning
Corresponding author: Franz Xaver Bauer, MSc, Institute of Medical and Polymer Engineering, Technical University Munich, Boltzmannstraße 15, 85748 Garching, Germany, Phone: +49-(0)-89-289-16715, Fax: +49-(0)-89-289-16702

Acknowledgments

The RapidNAM project is supported by the Zeidler Research Foundation. The authors wish to express their thanks for their financial support.

  1. Ethical statement: This study has been approved by the local ethic committee (approval number: 236:14).

  2. Conflict of interest: All authors declare they have no conflict of interest.

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Received: 2016-2-12
Accepted: 2017-1-5
Published Online: 2017-2-9
Published in Print: 2017-8-28

©2017 Walter de Gruyter GmbH, Berlin/Boston

Artikel in diesem Heft

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  6. An experimental study of shear-dependent human platelet adhesion and underlying protein-binding mechanisms in a cylindrical Couette system
  7. The influence of implant body and thread design of mini dental implants on the loading of surrounding bone: a finite element analysis
  8. RapidNAM: generative manufacturing approach of nasoalveolar molding devices for presurgical cleft lip and palate treatment
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  10. Biomechanical analysis of stiffness and fracture displacement after using PMMA-augmented sacroiliac screw fixation for sacrum fractures
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https://doi.org/10.1515/bmt-2016-0035
Schlagwörter für diesen Artikel
envelope curves; growth prediction factor; nasal stent; nasoalveolar molding; virtual planning

Artikel in diesem Heft

  1. Frontmatter
  2. Efficiency test of current carotid embolic protection devices
  3. Influence of sizes of abutments and fixation screws on dental implant system: a non-linear finite element analysis
  4. Biomechanical evaluation of novel ultrasound-activated bioresorbable pins for the treatment of osteochondral fractures compared to established methods
  5. Fabrication of multifunctional CaP-TC composite coatings and the corrosion protection they provide for magnesium alloys
  6. An experimental study of shear-dependent human platelet adhesion and underlying protein-binding mechanisms in a cylindrical Couette system
  7. The influence of implant body and thread design of mini dental implants on the loading of surrounding bone: a finite element analysis
  8. RapidNAM: generative manufacturing approach of nasoalveolar molding devices for presurgical cleft lip and palate treatment
  9. Enamel shear bond strength of different primers combined with an orthodontic adhesive paste
  10. Biomechanical analysis of stiffness and fracture displacement after using PMMA-augmented sacroiliac screw fixation for sacrum fractures
  11. Regular research articles
  12. An investigation of the effects of suture patterns on mechanical strength of intestinal anastomosis: an experimental study
  13. Relationship between linear velocity and tangential push force while turning to change the direction of the manual wheelchair
  14. Analysis of voluntary opening Ottobock Hook and Hosmer Hook for upper limb prosthetics: a preliminary study
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