Pro lékaře

Zirkon nebo e-max

Mezi zubními lékaři je rozšířeno mnoho mýtů o dvou nejkvalitnějších a nejčastěji používaných materiálech, ze kterých se zhotovují celokeramické zubní náhrady. Pokusil jsem se shrnout klady a zápory obou těchto materiálů:

Estetika je velmi dobrá u obou materiálů.
Zásadní rozdíl je v pevnosti těchto materiálů.

Pevnost lithiumdisilikátu se udává kolem 300 Mpa. Pevnost zirkonia se udává kolem 1 300 Mpa. Odpůrci zirkonu udávají pevnost fasetovaného zirkonu nižší než 300 Mpa, a k tomuto číslu docházejí tak, že korunce určí vrstvu keramiky, která má sama pevnost méně než 80 Mpa, na víc než 2 mm, zirkonové konstrukci 0,5 mm, a tyto špatná čísla vydělí celkovou vrstvou korunky. Správná čísla u fasetace jsou ale úplně jiná a tato argumentace je nekorektní. Pokud by stejně špatně fasetovali lithiumdisilikát, tak by výsledek byl výrazně horší. Toto je jenom jeden z mnoha falešných argumentů který ve výsledku škodí oběma materiálům, protože poté někteří lékaři indikují e-max špatně a výsledkem je celková nedůvěra k celokeramice.

Největší rozdíl mezi těmito materiály je v možnostech indikace. Lithiumdisilikát, neboli e-max, neboli presovaná keramika umožňuje bezrizikové zhotovení jenom jednotlivých korunek a pouze při preparaci na výrazný schůdek. Zirkon nemá žádné omezení v rozsahu.

Další výrazný rozdíl je v přípravě.

Preparace na korunku z e-maxu musí být schůdková, schůdek musí mít minimálně 0,8 mm a i prostor do skusu v žádném místě nesmí být menší než 0,8 mm, v zadním úseku alespoň 1 mm. Preparace i otisk musí být bez chyby. Pokud se jedná o frontální zub, tak zubní pahýl nesmí být tmavý nebo výrazně barevný, protože lithiumdisilikát je výrazně translucentní a nedokáže zakrýt tmavší barvu pahýlu. Anebo je nutné použít opákní materiál e-maxu, potom ovšem ztrácí smysl použití e-maxu.

Oproti e-maxu, na zirkon není nutná preparace na schůdek. Zirkon ve standardní podobě dokáže překrýt i kovovou nástavbu.

Další rozdíl je v metodě cementování.

Lithiumdisilikát se lepí adhezivně, zirkon se nedá leptat, cementuje se klasickým duálním cementem.

Když to shrnu, tak e-max je vhodný pouze pro jednotlivé korunky, ideálně v anatomickém tvaru na perfektně připravené pahýly. Zirkon je velmi všestranný materiál, který nahrazuje metalokeramiku skoro ve všech indikacích. Oba materiály jsou velmi kvalitní a dobře se doplňují.

Více zde: http://www.jslab.cz/tipy/zirkon-nebo-e-max/


27× komentováno “Zirkon nebo e-max
  1. Do you feel like you have tried everything possible in order to lose weight? You are not alone–many people have the same problem. The following article is designed to give you tips that you may not have even known existed. By following these tips, you will reach your weight loss goal in no time.

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  2. Some people, especially those running on busy daily schedules tend to use the pills to help maintain weight since they can not afford to follow all the diet programs. This is not advised. It is recommended that one seek advice from a professional in this field before using the pills. This can save one from many dangers associated with the misuse.

    The diet pills should always be taken whole. Some people tend to divide the pills to serve a longer period of time. This is not advised and can lead to ineffectiveness. If it is required that one takes a complete tablet, it means that a certain amount of the ingredients are required to achieve the desired goal. It is also recommended that one does not crush the pill and dissolve it in beverages. Chemicals found in beverages have the potential of neutralizing the desired nutrients in the pill thereby leading to ineffectiveness. The best way to take the tablets is swallowing them whole with a glass of water.

    The diet pills speed up the metabolic processes. This is the key factor that leads to the burning of all the fats in the body. This means that one passes out lots of urine, which subsequently leads to dehydration. It is imperative that the user take lots of water round the clock. This will help curb dehydration, which can lead to health problems. In addition to that, water offers the required medium for the function of the nutrients and elimination of the fats.

    When buying the review of diet pills, it is imperative that one gets the most recommended dose. People tend to compromise the quality and effectiveness of the tablets due to the variation in cost. The low priced pills depict poor quality, which means their effectiveness is not reliable. Some have also been found to cause health problems. The dose should also be taken as recommended. Over dose will not speed up the process but rather lead to complication. This will increase risk of side effects. If the taking of the pill is forgotten, do not take more to compensate for the lost time.

    The diet plan enclosed with the diet pills has also to be followed. According to the requirements, the termination of the diet must be done even with no results. This means your body is irresponsive.

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  3. Doctor Who is now considered a British Institute and has come a long way since it first aired on November 23rd 1963. The very first show saw the Doctor travel 100,00 years into the past to help some dim cavemen discover light. After 26 seasons and seven Doctors later the series came off our screens in 1989 much to the disappointment of the huge devoted fanbase. In 1996 an attempt was made to revive Doctor Who but it wasnt until June 2005 when it came back with a vengeance with Christopher Eccleston as the ninth Doctor that put the series back on the map as it were. It then went on for 5 years with David Tenant portraying the Doctor until 2010 when Matt Smith took over the role. Today it is still a great family show and has attracted many new fans.
    https://www.cialissansordonnancefr24.com/meilleur-prix-cialis-paris/

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  4. Snack of fried tomatoes like absolutely everything. Residents usually require guide are surprised mastery hostess. Even children with pleasure eat fried tomato in breadcrumbs. Tomatoes great combined are combined with many products. Garlic adds fineness. Cheese brings ruddy crust. Italian herbs turn roasted tomatoes into a dish from a restaurant. Omelette with tomatoes – simple and nutritious dish for breakfast. Prepare including sandwiches with fried tomatoes.
    Cooking tomatoes simply. For cooking use butter. In olive oil – fewer calories. It is also combined mixed with fried cubes tomatoes.
    http://stewedtomatoes.top/

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  5. LatonyaAllet v píše:

    Tato zpráva je zde zveřejněna pomocí programu XRumer + XEvil 4.0
    XEvil 4.0 je revoluční aplikace, která může obejít téměř veškerou ochranu proti botnetu.
    Captcha Rozpoznávání Google (ReCaptcha-1, ReCaptcha-2), Facebook, Yandex, VKontakte, Captcha Com a více než 8,4 milionu dalších typů!

    Četl jste to – to znamená, že to funguje! 😉
    Podrobnosti na oficiálních stránkách XEvil.Net, je bezplatná demo verze.

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  6. The prostate is an essential section of a male’s the reproductive system. It secretes fluids that help the transportation and activation of sperm. The men’s prostate is found just while watching rectum, below the bladder and all around the urethra. When there is prostate problem, in most cases really really irritating and inconvenient for the patient as his urinary method is directly affected.

    The common prostate health problems are prostate infection, enlarged prostate and cancer of prostate.

    Prostate infection, often known as prostatitis, is the most common prostate-related problem in men younger than 55 years old. Infections with the men’s prostate are classified into four types – acute bacterial prostatitis, chronic bacterial prostatitis, chronic abacterial prostatitis and prosttodynia.

    Acute bacterial prostatitis may be the least common of types of prostate infection. It is a result of bacteria located in the large intestines or urinary tract. Patients may experience fever, chills, body aches, back pains and urination problems. This condition is treated by making use of antibiotics or non-steroid anti-inflammatory drugs (NSAIDs) to ease the swelling.

    Chronic bacterial prostatitis is often a condition associated with a particular defect in the gland as well as the persistence presence of bacteria within the urinary tract. It can be a result of trauma to the urinary tract or by infections from the rest with the body. A patient may go through testicular pain, small of the back pains and urination problems. Although it is uncommon, it can be treated by removal of the prostate defect followed by the use antibiotics and NSAIDs to help remedy the redness.

    Non-bacterial prostatitis accounts for approximately 90% coming from all prostatitis cases; however, researchers have not to determine what causes these conditions. Some researchers feel that chronic non-bacterial prostatitis occur as a result of unknown infectious agents while other think that intensive exercise and lifting may cause these infections.

    Maintaining a Healthy Prostate

    To prevent prostate diseases, an effective meals are important. These are some of the actions you can take to maintain your prostate healthy.

    1. Drink sufficient water. Proper hydration is important for our health and wellbeing and it’ll also maintain your urinary track clean.

    2. Some studies declare that a few ejaculations weekly will assist to prevent prostate cancer.

    3. Eat red meat moderately. It has been shown that consuming a lot more than four meals of beef a week will raise the chance of prostate diseases and cancer.

    4. Maintain an effective diet with cereals, vegetable and fruits to ensure sufficient intake of nutrients essential for prostate health.

    The most significant measure to adopt to make certain a normal prostate would be to go for regular prostate health screening. If you are forty yrs . old and above, you should select prostate examination at least per year.

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  7. Howdy, i read your blog from time to time and i own a similar one and i was just wondering
    if you get a lot of spam comments? If so how do
    you stop it, any plugin or anything you can suggest?
    I get so much lately it’s driving me insane so any assistance is very much appreciated.

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  8. I will immediately snatch your rss as I can not to find your e-mail subscription link or newsletter
    service. Do you’ve any? Please allow me know in order that I could subscribe.

    Thanks.

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  9. Heya i’m for the first time here. I came across this board and I in finding It truly helpful & it helped me out much. I am hoping to present one thing again and help others such as you aided me.

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  10. I love your blog.. very nice colors & theme. Did you make this website yourself or did you hire someone to do
    it for you? Plz respond as I’m looking to construct my
    own blog and would like to find out where u got this from.

    thank you

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  11. Thanks for ones marvelous posting! I actually enjoyed reading it,
    you can be a great author.I will ensure that I bookmark your
    blog and may come back sometime soon. I want to
    encourage that you continue your great writing, have a nice afternoon!

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  12. To determine internal swelling is difficult enough, therefore, consequently, they influence the body for a long time, which threatens the normal fetus. Fluids are dangerous because they break blood circulation. Such situation leads to worsening feeding and the breath baby, formed hypoxia.
    Fighting such a pathology should be done with the help of correction feeding and special procedures so that water does not stay tissues. If expectant mother is resting, then under the feet better put a cushion or pillow to improve the blood circulation of tired legs. Do not long time to sit or stand, as this leads to stagnation in the body. It is recommended that the knee-elbow position several times a day in order to increase blood flow.
    how to relieve breast pain during pregnancy

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  13. Peels can help to escape from of all old amendments of the skin cover. operations efficient at any age, shown for skin of any type. After light exfoliation disappear minor wrinkles, skin turns out young, smooth. Adaptation – three days. The middle peeling beautifully copes wrinkles (expression, old, affects small pits, removes age spots.
    Recovery – 7 days. Profound peeling doing in the beauty hospitals. This is maximum effective operation, although requires long period adaptation – about four weeks.
    chemical skin peel before and after

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  14. Torsion bras de quelqu’un est comment dur votre sang pousse contre les parois de vos arteres lorsque votre coeur essence pompe le sang. Arteres sont les tubes qui transportent perseverent b gerer offre sang loin de votre coeur. Chaque culture votre determination bat, il pompe le sang par vos arteres a la reste de votre corps.
    https://www.cialispascherfr24.com/cialis-le-top/

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  15. Lump armpit brings discomfort, pulls. To delay visit in the hospital cannot be. Lump under the muscle cavity may become dangerous disease. But more often it is result frequent use antiperspirants, non-compliance rules personal hygiene, excessive sweating. Inflammation triggers a close clothing, polluted razor, the infection.
    painful lump under armpit
    Discomfort under the arm, redness, lump getting warm? This is the boil that should should, then drink antibiotics. In the first stage cost lotions, antibacterial medicines. If the ailment is started, the required surgery.

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  16. Bitcoin tradicionalmente relacionam-se a equipe digitais de dinheiro. Ela vive exclusivamente em formato virtual. Apesar de sua real trocados por produtos, servicos ou convencionais financas.
    Bitcoin unique. Ela nao funcionando com as atividades dos bancos, nao tem fisico aspecto, e inicialmente, criada desregulada e descentralizada.
    Se simples palavras, o que e o bitcoin e digital financas, que sao extraidas em computacao instrumentos e circulam no proprio sistema de seu leis.
    hardware para mineracao bitcoin

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  17. I’ll immediately clutch your rss as I can not to find
    your email subscription hyperlink or e-newsletter service.
    Do you have any? Kindly allow me understand in order that I may subscribe.
    Thanks.

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  18. It’s appropriate time to make some plans for the future and it’s time to
    be happy. I’ve read this post and if I could I want to suggest you some interesting things or suggestions.
    Maybe you could write next articles referring to
    this article. I wish to read more things about it!

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  19. Thank you so much pertaining to giving me an update on this issue on your site. Please realise that if a brand new post becomes available or in the event that any alterations occur with the current posting, I would want to consider reading more and focusing on how to make good usage of those approaches you share. Thanks for your efforts and consideration of other folks by making this blog available.

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

  20. Write more, thats all I have to say. Literally, it seems as though you relied on the video to make your point.
    You obviously know what youre talking about,
    why waste your intelligence on just posting videos to your weblog when you could be giving us something enlightening to read?

    Souhlasím / nesouhlasím: Thumb up 0 Thumb down 0

Napsat komentář

Vaše emailová adresa nebude zveřejněna. Vyžadované informace jsou označeny *