Page 10 - Journal of Laser Dentistry 1

amblyopia. Very rarely, extremely large hemangiomas can cause high-output heart failure due to the amount of blood that must be pumped to excess blood vessels. Lesions adjacent to bone can also cause erosion of the bone.

The most frequent complaints about hemangiomas, however, stem from psychosocial complications: the condition can affect a person's appearance and can provoke attention and malicious reactions from others. Particular problems occur if the lip or nose is involved, as distortion can be difficult to treat surgically. The potential for psychological injury develops from school age onward. It is therefore important to consider treatment prior to school if adequate spontaneous improvement has not occurred.

Treatment

Most hemangiomas disappear without treatment, leaving minimal or no visible marks. Large hemangiomas can leave visible skin changes secondary to severe stretching of the skin or damage to surface texture. When hemangiomas interfere with vision, breathing, or threaten significant cosmetic injury, they are usually treated.

Until recently, the mainstay of treatment was oral corticosteroid therapy, but there are now alternative treatments. A published letter reported that the beta-blocker propranolol reduced severe hemangiomas in infants. The topically applied beta blocker gel Timolol, is also being trialled for small facial hemangiomas that do not justify systemic treatment.. Other treatments that have been used include interferonor vincristine. They may be considered if first-line therapy fails.

Surgical removal is sometimes indicated, particularly if there has been delay in commencing treatment and structural changes have become irreversible. Surgery may also be necessary to correct distortion of facial

features, again in the case of inadequate or failed early medical intervention. Blockage of the airway will often require a tracheostomy to be performed, which involves the insertion of an external airway through the front of the neck into the trachea below the level of the obstruction.

Smaller raised lesions are sometimes treated with injection of corticosteroid directly into the lesion. A pulsed dye laser can be useful for very early, flat, superficial lesions, if they appear in cosmetically significant areas or for those lesions that leave residual surface blood vessels in the case of incomplete resolution. Sometimes a pulsed dye laser can be used to accelerate healing. In Dentistry normally are used Diode Laser 810nm. Unfortunately, raised lesions or lesions under the skin do not respond to laser treatment. Ulceration will usually heal with topical medication and special dressings under medical supervision.

Prognosis

Hemangiomas go through three stages of development and decay:

1. In the proliferation stage, a hemangioma grows very quickly. This stage can last up to twelve months.

2. In the rest stage, there is very little change in a hemangioma's appearance. This usually lasts until the infant is one to two years old.

3. In the involution phase, a hemangioma finally begins to diminish in size. 50% of lesions will have disappeared by 5 years of age, and the vast majority will have gone by 10 years of age.