Implant retained auricular prosthesis with a modified hader bar: a case report

Abstract

Auricular prostheses for defects of external ear are retained either by mechanical means or implants. All implant retained prostheses are retained by various means such as bar and clip, magnetic attachments or a combination of bar, clip and magnets. The commonest problem encountered with the bar and clip system is loosening of the clip after 3-4 months. When magnets are used as retaining component they tend to corrode over a period of time. So various alternative retention methods which possess good retentive qualities, ease of reparability and patient friendly were tried. In the present case a newly modified Hader bar design which can act as an additional retentive feature apart from the clip is employed to increase retention. The major advantages in the modified Hader bar system were that only two implants were employed, the additional loops in the Hader bar prevented micro movements and the retentive acrylic locks were easy to repair if broken. The modified Hader bar has anti-rotational slots which prevents the sliding or rotation of the prosthesis which gave new confidence to the patient who was otherwise worried of inadvertent displacement of the ear prosthesis while playing.

Keywords: Auricular prostheses; Craniofacial implants; Modified Hader bar design.

Fig. 1

Scan showing osseointegrated implants

Fig. 2

Modified Hader-bar system with two loops

Fig. 3

Super structure tried on patient

Fig. 4

Completed wax pattern

Fig. 5

Finished prosthesis