Haartransplantation mit DHI-Methode 

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Basic knowledge

 

The human hair, growth rate and hair thickness as well as the number of hairs are genetic factors that can be different for each person.

Number of hairs on the head: approx. 0-150,000 depending on the hair color, so blondes have an average of 150,000, black-haired 110,000, brunettes 100,000, redheads 80,000 hairs.

Natural hair loss every day: approx. 60-80 hairs

Lifespan of the hair root: approx. 5-7 years

 

The Hairroot

 

It reaches approx. 0.5 cm deep into the skin and can do astonishing things: every day all hair roots of the scalp produce approx. 30-40 m of hair together. In order to fulfill this building function, you will be supplied with lots of close-by and building-up substances via fine blood vessels. In particular, the stem cells at the lower end of the hair root - the so-called hair bulb - are dependent on a good supply. From here the regrowing hair is pushed approx. 0.33 mm daily through the hair root canal to the surface.

Growth phases

 

Anagen phase:

In this phase, a new hair root forms and the production of a hair begins. This phase lasts for about 2 to 7 years in human scalp hair, depending on age and gender. Around 80% of the hair is in this phase.

 

Catagen phase:

During this transition phase, which lasts 2 to 3 weeks, the matrix stops producing cells and the hair follicle narrows in the lower area. The hair becomes detached from the papilla and atrophies. The hair follicle shortens. Approx. 2% of all hair is in this phase.

 

Telogen phase:

With this final phase, in which up to 18% of the scalp hair is found, the hair papilla is renewed and the hair follicle regenerates. The matrix re-emerges and starts cell division, creating a new hair. This section of the hair cycle lasts for 2 to 4 months.

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Genetic Hairloss

 

The main cause of the genetic hair loss is a hereditary hypersensitivity of the hair follicles to the steroid hormone dihydrotestosterone (DHT). If there is too much DHT in the scalp and there is an inherited hypersensitivity to it, the hair's growth phase is shortened. A man with light hair growth accordingly has no fewer hair follicles than a man with full hair growth, only the growth phase of the hair is shortened in such a way that it is barely visible (miniature hair). The hair follicles gradually atrophy, which is due to the hypersensitivity to the DHT. DHT is the active form of the male hormone testosterone, but women are also affected. The hormone level in the blood does not necessarily have to be increased, as it is a predisposition to hypersensitivity. The hair growth cycles are shortened more and more until the hair roots finally wither.

 

DHT results from the conversion of the hormone testosterone by means of the enzyme 5a-reductase. Since androgenetic alopecia is not inherited by one, but by several, largely unknown genes, it is impossible to predict in any case what course the hair loss will take in the course of life. Balding can be both less and more pronounced than for example in also affected family members.

 

Hairloss Men

 

The illustration shows that, in the typical course, receding hairlines initially develop. Later, a hair clearing (tonsure) also becomes noticeable in the vertex area (upper back of the head), until the clearing of the forehead and the back of the head converge to create the typical baldness. The hair in the lower temples and on the lower back of the head is retained. Deviating from this, the hair glade can also spread from the back of the head or from the base of the forehead.

 

Hairloss Woman

 

Androgenetic alopecia (AGA) in women usually follows the middle parting pattern. There is usually a slowly progressive thinning of the hair in the top of the head. At the beginning there is usually only a widening of the middle parting, which can slowly increase and take the shape of a so-called Christmas tree. As you progress, the hair on the top of your head thins around the size of your palm and the scalp becomes increasingly visible. Most of the time, a front fringe of hair is retained, and a real bald head like a man's almost never occurs. In some cases, however, the side and frontal head areas (frontal) can also be affected.

Hair Pen Methode
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The DHI implantation method and the Choi implantation pen

DHI Hairtransplantation (short for "direct hair implantation") is also known under the name "Hair Pen Method" or "Choi Method".

It is considered by some to be the newest hair transplant method, while others believe that there is no established technique called DHI. There is also the allegation that it is just a marketing strategy. The debate continues, with this information we want to create the clearest possible understanding of this procedure and how it works.

DHI hair transplantation (short for "direct hair implantation") is also known under the name "Hair Pen Method" or "Choi Method". The so-called hair pen is nothing more than a hair pen into which the previously removed hair (grafts) are inserted and implanted into the scalp. As already described, the opening of the canal and the insertion of the hair into the bald areas of the hair image take place simultaneously. The grafts are removed from the donor area as usual and then stored in the special nutrient solution. When transplanting in the recipient area, a separate channel opening is no longer necessary. With the help of the Choi Implanter Pen, the grafts are transplanted directly, at the tip of which there is both a small needle and space for the hair root, the hair root can be inserted directly without the corresponding area having to be worked on beforehand.

 

Hair transplants performed with the DHI method achieve the most natural and successful results. Thanks to the DHI method, we can achieve very high hair density and wound healing is faster. The results are closest to natural hair. The DHI hair transplant, for example, by working with the hair pen has the great advantage that the bleeding on the scalp during the hair transplant is significantly less and the growth rate of the transplanted hair is significantly higher.

 

The DHI hair transplant is not only possible, for example, for a hair transplant of the receding hairline or other areas of the scalp. An eyebrow transplant or the transplant of beard hair can also be carried out with the DHI method.

 

This procedure is a lot more time-consuming, which is why it is only possible up to a certain number of grafts, but it promises optimal end results.

DHI Haartransplantation Türkei

a) Removal of the hair to be transplanted: As with the FUE hair transplant, the required donor hair is first removed with the DHI method prior to the implantation of the hair and safely stored and vitalized for the later implantation.

 

b) Opening of the hair canals: Since the hair to be implanted must slide safely into the scalp, the hair canal is opened with the help of the hair pin. The needle of the hair pin carefully pierces the scalp at an angle of about 45 degrees.

(From this step the description applies to the individual transplanted hair - this process is repeated continuously until all hairs have been transplanted)

 

c) Insertion of the hair follicle: The hair is now inserted into the previously opened hair canal, also with the help of the hair pin. During the procedure, 2-6 Choi devices with 15-16 needles are used. This is because the needle sizes to be used depend on the size of the hair roots and these can vary. A different hair pin is used for slightly thicker hair than for thin hair. After all hair channels have been pierced and all hair implanted, the DHI hair transplant is over and the regeneration period after the hair transplant can begin.

 

d) The hair grows: For the final result of the hair transplant, a little patience is required even after the DHI hair transplant. After about a year you will be able to see the full result and after about three months the new hair will slowly start to sprout.

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