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References: Hair growth and hair loss








Dermatol Surg. 1998 Jul;24(7):749-54.
Update on laser-assisted hair transplantation.

Villnow MM, Feriduni B.

Laser-Aesthetic Deutschland, Dusseldorf, Germany.

OBJECTIVE: The aim of this study was to examine the laser parameters evaluated in previous studies with a larger patient group (n = 491), particularly with regard to patient-related and operation-related advantages and disadvantages. Particular attention was devoted to hair growth rate and the postoperative healing process. METHODS: The implant holes were created using an optomechanical, beam-focusing miniature scanner and a 80-W carbon dioxide laser. RESULTS: All patients in Norwood classification groups I, II, and III displayed proper hair growth. On an average of all patients treated, this occurred with a delay of some 4-6 weeks. Compared with the cold steel technique, the healing process was shortened by 3-4 days. CONCLUSIONS: Making allowances for the formula: minimum wattage with a minimum exposure time and a minimum hole diameter, the laser is an ideal instrument to use on the hairline and crown.

online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9693669&dopt=Abstract




Dermatology. 2002;204(1):33-6.
Perception of baldness and hair density.

Vecchio F, Guarrera M, Rebora A.

DiSEM, Section of Dermatology, University of Genoa, Italy.

BACKGROUND: Androgenetic alopecia needs to be scored precisely. OBJECTIVE: A possible measure is the ratio between the hair density in the parietal area and that in the occipital area which, being not affected by baldness, supposedly has a 'normal' density. METHODS: On the vertex and just below the occipital protuberance of 109 men, two 1-cm(2) areas were identified. In both areas, hairs were clipped short and photographed by a videomicroscope. Hairs were then counted within a 30-mm(2)-wide central square section. RESULTS: In the occipital area, the average count was 127/cm(2), without differences among the Hamilton/Norwood classes. In the parietal area, the average density significantly diminished from 138 to 47/cm(2). A main difference was found between classes 1-3 vertex and classes 4-6. CONCLUSIONS: The parietal/occipital ratio decreased significantly only when baldness was clinically manifest. The parietal/occipital ratio cannot be a better measure of baldness severity than the rough Hamilton/Norwood scale. The perception of early baldness does not depend on the diminished hair density, but also on the progressive thinning of the hair shafts. Copyright 2002 S. Karger AG, Basel

online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11834847&dopt=Abstract




Postgrad Med. 1981 Apr;69(4):53-62.
Contemporary techniques of hair replacement.

Stough DB 3rd, Cates JA.

For the bald patient who is not satisfied with a hairpiece, various surgical techniques of hair replacement provide good results with minimal side effects. The punch autograft technique, in which hair is taken from the lateral portions of the scalp, is most widely used. If this technique is not adequate in a case of extensive baldness, it can be augmented by surgical resection of tissue from the bald site or by fashioning of flaps from hair-bearing areas. In all of these techniques, design of the frontal area to provide a natural appearance is of primary importance.

online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=7208402&dopt=Abstract





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