瓷牙比色驗證

學比色,就是為了不要比色

IMG 5763
tof 不得不在這邊宣布:「我要退出美容牙醫界了…」
退出的原因很簡單,只有兩個:
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03 12 月 2013

Perfect imperfections: 完美的缺陷

Final frontal

(本篇文章的简体版在 这里
無論如何,這絕對稱不上是一個美觀的齒列。
牙齦萎縮、完全消失的齒間乳凸、錯咬、嚴重不整齊的排列及門齒切端磨耗,完全跟美容牙科的「esthetics」扯不上半點關係。
製作假牙的醫師,有一個宿命,那就是努力的模仿自然,尤其在之前的文章中,tof 說明了一則鐵律:Only nature can mimic nature。我想沒有太多人會反對我的說法。但是,自然並非永遠是完美的,有 imperfection 是定律,並非例外,於是,試圖模仿缺陷,成為我們身為假牙科醫師一個無法完成宿命中的另一個宿命…..
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21 6 月 2013

假牙擬真的三要素之二:顏色特徵

Manipulation 4
有關顏色部分,要讓瓷牙看起來像自然牙的三大要素是:

  1. 顏色特徵(shade characterization)
  2. 顏色數據(shade data)
  3. 表面結構(surface texture)

之前 tof 已經在 這篇 介紹過有關因為閃光燈造成的表面結構的重要性。這一篇,要跟各位談談另一項重要的因素:顏色特徵(shade characterization)。這項元素的重要性,以 tof 的觀點來看,不亞於其他兩項,如果要把它列為假牙擬真三要素中,最重要的一項也不為過。許多美學大師在談到用視覺判斷假牙顏色相似度的時侯,常常會 cite 這篇 Johnston & Kao, 1989 年 publish 在 JDR 的 article,說ΔE=3.7 時是視覺判斷假牙顏色像或是不像的閥值,這實在是犯了嚴重的錯誤,因為 Johnston 的 study 忽略了假牙要擬真,除了顏色數據外,還有其他的兩個重要要素。今天要談的,就是其中之一:顏色特徵。
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24 12 月 2012

One of the three essentials in making crowns look real: Surface Texture

Surface texture 095
如果要看本篇的中文版,請按這裡
As a Prosthodontist, I naturally have higher expectations on my own finished works. As shown in the photo above, tooth #21 is a temporary crown, and if you’re the fans of tof, you can immediately identify this and speak out loud: “Wow, it’s such an amazing work, and it’s no doubt like the real ones!”. Meanwhile, some would think: “Not again, this is possibly another flashy article! After one hundred times of practices for trying, it just comes out right once, and here is it for the show!”
Eh, two ways of sayings are both right and wrong. The right part about the above photo is, #21 is indeed a neat temporary crown, but for the wrong part, ha-ha, this is not made by tof. In fact, there is too much bitterness as well as things out of my control, and please just hear me out for what I’m going to reveal in the followings.
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02 10 月 2012

假牙擬真的三要素之一:表面結構

Surface texture 095
To view English version of this post, please click here
身為假牙科的醫師,自然會對自己的成品有較高的要求。就像上圖,牙齒#21是一顆臨時假牙,tof 的粉絲一看就說:「哇,真是神乎奇技,做的太擬真了!」,有些人會想:「又來了,這又是炫耀文吧!100顆做一顆像這樣的就拿來現!」。嗯,兩種說法都對也都錯。對的部份是以上圖來看,#21的確是一顆完美無暇的臨時假牙,錯的部份呢,哈哈,這不是 tof 做的,其實這中間有太多的辛酸與無奈,請看下去就知道了。
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01 10 月 2012

Evernote: An Indispensable Cloud Tool for the Prosthodontists

頁首照片
如果要看本篇的中文版,請按這裡
For the ways to transfer pictures to the dental technician from the prosthodontists, other than the one introduced in the last post about the “dropbox”, today in this section, tof is going to introduce an even more powerful cloud interface, which almost covered all the requirements from the prosthodontists on information transfers. It is already renowned to the general public with its popular name-“Evernote”.
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16 8 月 2012

傳遞比色照片給技師的方法 (1)- dropbox

 
Dropbox icon 幾乎只要做假牙的醫師,都會需要傳遞數位比色照片給技師,過去常用的方法是利用 email,但是由於相機的畫素越來越大,動輒 1,2 mega 一張照片算是小 case,這種情形下 email 常常自動怠工,根本就寄不到。於是乎以下的對話就常常發生…….
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08 7 月 2012

前牙瓷牙冠顏色驗證-廠商篇

Screen Shot 2012 06 17 at 9 13 50 PM  tof 醫師最近因為國事繁忙,嚴重拖稿,導致過去承諾要寫的比色驗證廠商篇一直難產。
其實這一篇主要就是跟大家討論,如果你現在要選擇購買一台比色機,要考慮哪些功能,簡單的說,就是要選哪一台比色機的意思啦。
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17 6 月 2012

前牙瓷牙冠顏色驗證:技師篇

我是一個事業有成的齒科技師,也在台北擁有一家規模不小的技工所,所內的瓷技師就有4、5個,當然也包括我在內。在我看似完美的職業生涯中,其實也有一點小小的缺憾,那就是前牙單顆瓷牙的齒色,常讓我捉摸不定,所以有些遠程的 case 我不敢放心的接。 原因是,各位知道,偶爾會有醫師因為齒色不正確的原因而 repeat 我的case,如果幾次還不能達到要求,到最後無奈只好請客戶到我的技工所來比色(為此,我還耗資數十萬裝修了一間比色室,好讓客戶來不會看到亂亂的感覺)。有時候我也得親自出馬去診所幫客戶比色(不好意思,以我的身價,小診所我可是不會親自出馬的)。
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17 3 月 2012

Shade verification of anterior Porcelain Crowns- dental office part.

Shadepilot spectrophotometer


要看本篇的中文版,請按 這裡 (但內容有一些不同哦!)
Tof mentioned about the shade verification procedure and how it works in previous articles. Now let’s see how it is practiced clinically.
First of all, let’s see who needs a system like this.
Since this system is designed to avoid the troubles that a patient has to come back and forth for a shade mis-matched crown. (Remakes due to shade also sometimes caused the loss of faith of the patients on the dentist, tof has heard a true story in the clinic I used to worked for. A patient lost her patience on the never-ending process of changing shades. She took the crown out of her mouth, threw it on the floor and yelled: “I am done with this nonsense!” And then she turned around and stormed out of the clinic.)
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17 3 月 2012