Fabrication Of Auricular Prosthesis Research Articles

Digital workflow for auricular prosthesis fabrication with a negative mold

A prosthesis for a patient with a complete auricle defect can be fabricated with computer-aided design and computer-aided manufacturing, significantly reducing the number of patient visits and improving the efficiency of the production process. This technique provides a digital workflow for designing virtual patterns and negative molds for an auricular prosthesis.

Rapid prototyping technology for silicone auricular prosthesis fabrication: A pilot study

Context: Three-dimensional printing technologies have been used recently for patients with maxillofacial deformities who seek esthetic prosthesis. The aim of the present study was to assess the accuracy, surface texture, marginal adaptation, patient satisfaction, and ease of fabrication of silicone auricular prostheses fabricated by the rapid prototyping technology (RPT) when compared to the conventional method (CM). Materials and Methods: A pilot study was conducted on five patients who had partial auriculectomy defects. Ear prostheses fabricated by CM and RPT were compared. RPT include the fabrication of prostheses by the duplication of polymer model fabrication or by injecting silicone to mold obtained by Vacuum casting method (VCM). The prostheses were evaluated by 15 randomly allotted trained independent observers based on the Likert Scale. The patients performed a self-rating assessment followed by a report from the clinician and technician. Statistical Analysis: The scores for each of the dimension were analyzed using the ANOVA. The cost, time, and quantity of silicone material were expressed in means for three fabrication methods. Results: Prostheses fabricated by RPT yielded superior scores in terms of accuracy, texture, and marginal fit; the vacuum casted prostheses being more precise. The patient perspective was in favor of RPT though not significant statistically. Time for fabrication and number of patient visits were less for rapid prototyping methods than CM. Conclusion: The present study demonstrated the potential benefits of digital method in the fabrication of auricular prosthesis using RPT in the field of maxillofacial rehabilitation.

RETRACTED

At the request of the editorMayank Shah 'Auricular prosthesis fabrication using computer-aided design and rapid prototyping technologies' Prosthetics and Orthotics International, published online before print on October 8, 2013 as doi:10.1177/0309364613504779has been retracted. This is because it contains unattributed overlap withK. Subburaj, C. Nair, S. Rajesh, S. M. Meshram, B. Ravi 'Rapid development of auricular prosthesis using CAD and rapid prototyping technologies' International Journal of Oral & Maxillofacial Surgery 2007; 36: 938-943 doi:10.1016/j.ijom.2007.07.013.

Prosthodontic rehabilitation of hemifacial microsomia

Hemifacial microsomia, a developmental anomaly involving the first and second branchial arches, is one of the most common craniofacial anomalies. This disorder affects orofacial structures with varying clinical features. It is also associated with underdevelopment of the temporomandibular joint, mandibular ramus, masticatory muscles, ears, and occasionally defects in facial nerve and muscles. Physical deformities affecting face, ears, eyes, and oral cavity can pose esthetic and functional problems. The rehabilitation of these patients should be multidisciplinary including prosthodontic management as these patients present with complex clinical features. Treatment approach depends on patient's age, extent of physical and psychological deformity. The fabrication of auricular prosthesis is considered to be one of the most difficult replacements in maxillofacial rehabilitation. The severe undercuts and pronounced convolutions of the ear's surface present a challenge in simulating a natural proportioned prosthesis. This paper presents an outline in basic fabrication of prosthetic ear by conventional technique where the wax pattern is fabricated from the impression of an individual with a similarly proportioned ear.

Fabrication of an educational model for patients considering prostheses retained by osseointegrated implants

Patients considering the use of implant-retained craniofacial prostheses are faced with a large body of new information. This article describes the fabrication of a 3-dimensional teaching aid that helps educate such patients about the role of osseointegration in prosthetic treatment. The model illustrates the stages of auricular prosthesis fabrication and can be used to demonstrate proper prosthesis hygiene. (J Prosthet Dent 2002;87:679-83.)

Hemifacial microsomia and treatment options for auricular replacement: A review of the literature

Statement of problem. Although surgical reconstruction is the treatment of choice for auricular deformities that result from hemifacial microsomia, the implant-retained auricular prosthesis must be considered when surgical reconstruction is not possible. The competent and successful practitioner should be knowledgeable of the nature of this congenital disease. Purpose. This article reviewed the first and second branchial syndrome, treatment approaches, and potential advances in surgical and prosthetic rehabilitation for patients with hemifacial microsomia. Conclusion. Advantages and disadvantages of autogenous and alloplastic ear reconstructions are discussed. New research initiatives, such as tissue engineering and fabrication of auricular prosthesis by CAD/CAM, offer the potential for improved treatment for the future treatment of hemifacial microsomia. (J Prosthet Dent 1999;82:197-204.)