Chin augmentation

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Editors-In-Chief: Martin I. Newman, M.D., FACS, Cleveland Clinic Florida, [1]; Michel C. Samson, M.D., FRCSC, FACS [2]

## Contents

* 1 Overview
* 2 Potential risks and side effects
* 3 Chemical compositions
* 4 References
* 5 See also
* 6 External links

## Overview

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Chin augmentation using surgical implants can alter the underlying structure of the face, providing better balance to the facial features. This operation is often performed at the time of rhinoplasty to help balance the facial proportions.

Chin implants are to build a better profile.[1] Patients’ own bone is donated from ribs and from part of the pelvis (the ilium.) Unfortunately, use of donated bone implants in chin augmentation, even the patient’s own, appears to be associated with a higher rate of infection, even after the implant has been in place for decades.

Chin augmentation is still popular because it’s a relatively easy operation for both surgeon and patient while producing dramatic and noticeable changes in the silhouette of the face. This type of surgery is usually performed by an oral and maxillofacial surgeon.

## Potential risks and side effects

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The usual complications are relatively minor and include swelling, hematoma (blood pooling) and numbness of the lower lip which usually does not last long. Other, less common risks include infection, bony changes and displacement of the implant.[2]

## Chemical compositions

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Gore-tex used in plastic surgery and other operations is known by an abbreviation of its chemical name, ePTFE (expanded polytetrafluoroethylene) or Gore S.A.M. (subcutaneous augmentation material.)[3]

ePTFE is used in medicine because it is biocompatible and does not cause problems inside the human body. Because ePTFE is flexible and soft but very strong, it is inserted during operations in trimmed sheets and carved blocks and held to the bone by titanium screws. But because the material is porous, the force that really holds the implant in place is soft tissue and bone growing through and into the implant.

Another chin augmentation implant material is commercially known as AlloDerm and known to physicians as acellular human cadavertic derms. AlloDerm comes from tissue donors; just after death, technicians remove a thin layer of skin and use antibiotics and other substances to remove the cells and donor DNA that may cause rejection. The graft that emerges is often used to cover chin implants. Other typical types of chin implants include silicone implants in varying degrees of softness; silicone elastomers (any of various polymers having the elastic properties of natural rubber) and porous polyethylene implants. Other common implant materials include Supramid, a braided nonabsorbale synthetic suture material in polymer shell and Mersiline, a mesh-like material that provides a scaffold on the bone.[4]

## References

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1. ↑ Aufricht, G: combined plastic surgery of the nose and chin; resume of twenty seven years’ experiences. Am J Surg 1958 Feb;95(2): 231-6
2. ↑ Costantino PD. FriedmanCD: Soft-tissue augmentation and replacement in the head and neck. General considerations, Ontolaryngol Clin North Am 1994 Feb;27(1): 1-12
3. ↑ Gore Medical Products Maas CS, Merwin GE, Wilson J, et al: Comparison of biomaterials for facial augmentation. Arch Otolaryngol Head Neck Surg 1990 May; 116(5): 551-6.
4. ↑ Guyuron B, Raszewski RL: A critical comparison of osteoplasic and alloplastic augmentation genioplasty. Aesthhetic Plast Surg 1990 Summer, 14(3): 199-206

## See also

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* Chin sling
* Orthognathic surgery
* Maxillofacial Surgery
* Plastic Surgery
* Otolaryngology

## External links

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* Combining Chin-Jowl Implants with Local Anesthesia Facial Rejuvenation
* Facial Plastic Surgery Network Discussion Forum
* Chin augmentation \- more detailed article at Citizendium

* v
* t
* e

Plastic surgery

Techniques|

Incision • Excision • Microsurgery • Chemosurgery • Electrosurgery • Laser surgery • Dermabrasion • Liposuction

Common procedures|

Autograft • Allograft • Xenograft

Cosmetic surgery|

Abdominal etching • Abdominoplasty • Blepharoplasty• Mammoplasty (Breast augmentation • Breast reduction • Breast lift) • Buttock Augmentation • Chemical peel • Labiaplasty • Rhinoplasty • Otoplasty • Rhytidectomy • Suction-Assisted Lipectomy • Chin augmentation • Cheek augmentation • Collagen / fat / hyaluronic acid and other tissue filler injections • Laser skin resurfacing

Sub-specialties|

Craniofacial surgery • Hand surgery • Microsurgery • Cosmetic surgery • Pediatric plastic surgery • Burn surgery

Common functional impairments treated|

Burns • Traumatic injuries (e.g. facial bone fractures • Congenital abnormalities (e.g. Cleft palate) • Developmental abnormalities • Infection or Disease • Removal of cancers or tumors (e.g. mastectomy for a breast cancer)

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