What would be the correct thickness, type and translucency of enamel composite for esthetic layering esthetic tech?

Before you start to read this post, you have to remember small things from Chapter 1, such as

𝑉𝑎𝑙𝑢𝑒, 𝑡𝑟𝑎𝑛𝑠𝑙𝑢𝑐𝑒𝑛𝑐𝑦, 𝑜𝑝𝑎𝑙𝑒𝑠𝑒𝑛𝑐𝑒 𝑏𝑙𝑢𝑒 𝑒𝑓𝑓𝑒𝑐𝑡, 𝑙𝑎𝑦𝑒𝑟𝑠 𝑜𝑓 𝑟𝑒𝑠𝑡𝑜𝑟𝑎𝑡𝑖𝑜𝑛 ( 𝑖𝑛, 𝑜𝑢𝑡, 𝑚𝑖𝑑 ). and you can see the first chapter here 𝕮𝖍𝖆𝖕𝖙𝖊𝖗 𝖔𝖓𝖊: 𝕮𝖔𝖑𝖔r

and now we can start this Post with a key Question ;

What would be the correct thickness, type and translucency of enamel composite for esthetic layering esthetic tech?

Let's start with the definition of Out Layer

◽️𝑶𝒖𝒕 𝑳𝒂𝒚𝒆𝒓 is a layer of composite that represents enamel in natural teeth and is located in the superficial layer of restoration. And it's the skin of the tooth ( which is the most complex structure in restoration because of interaction with light ) ...

to understand which Type of Enamel Composite, we are looking forward to;

first, you have to understand the Natural characteristics of Enamel:-

1) Crystal Structure.

2) 𝙂𝙡𝙖𝙨𝙨 𝙚𝙛𝙛𝙚𝙘𝙩

3) 𝐄𝐧𝐚𝐦𝐞𝐥 𝐫𝐞𝐟𝐥𝐞𝐜𝐭𝐢𝐯𝐞 𝐢𝐧𝐝𝐞𝐱

4) 𝐄𝐧𝐚𝐦𝐞𝐥 𝐨𝐩𝐚𝐜𝐢𝐭𝐲

5) 𝐄𝐧𝐚𝐦𝐞𝐥 𝐝𝐞𝐡𝐲𝐝𝐫𝐚𝐭𝐢𝐨𝐧

6) 𝐄𝐧𝐚𝐦𝐞𝐥 𝐓𝐫𝐚𝐧𝐬𝐥𝐮𝐜𝐞𝐧𝐜𝐲

7) 𝐄𝐧𝐚𝐦𝐞𝐥 𝐚𝐠𝐢𝐧𝐠

8) 𝑩𝒍𝒂𝒄𝒌 𝒂𝒏𝒅 𝒘𝒉𝒊𝒕𝒆 𝒑𝒊𝒄𝒕𝒖𝒓𝒆

9) 𝐢𝐝𝐞𝐚𝐥 𝐩𝐫𝐨𝐩𝐞𝐫𝐭𝐢𝐞𝐬 𝐨𝐟 𝐄𝐧𝐚𝐦𝐞𝐥 𝐜𝐨𝐦𝐩𝐨𝐬𝐢𝐭𝐞

1) Crystal Structure

𝑵𝒂𝒕𝒖𝒓𝒂𝒍 𝒆𝒏𝒂𝒎𝒆𝒍:- has a unique complex structure due to its reactions with light like ( 𝗥𝗲𝗳𝗹𝗲𝗰𝘁𝗶𝗼𝗻, 𝘁𝗿𝗮𝗻𝘀𝗺𝗶𝘀𝘀𝗶𝗼𝗻, 𝗮𝗯𝘀𝗼𝗿𝗽𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗲𝗺𝗶𝘀𝘀𝗶𝗼𝗻 𝗼𝗳 𝗹𝗶𝗴𝗵𝘁 ) ...

Which happens due to its own crystal structure of :

1) prismatic structure ... High translucent matter and inorganic.

2) inter prismatic matter .... Given more opaque and organic ...

The combination between them makes enamel has both ( Translucent and a high-value substance at the same time ), which is impossible to find industrially.

𝗛𝗶𝗴𝗵 𝘃𝗮𝗹𝘂𝗲 𝗮𝗻𝗱 𝗵𝗶𝗴𝗵 𝘁𝗿𝗮𝗻𝘀𝗹𝘂𝗰𝗲𝗻𝘁 𝘄𝗶𝘁𝗵 𝘁𝗵𝗲 𝘀𝗮𝗺𝗲 𝘁𝗵𝗶𝗰𝗸𝗻𝗲𝘀𝘀 𝗼𝗳 𝗻𝗮𝘁𝘂𝗿𝗮𝗹 𝗲𝗻𝗮𝗺𝗲𝗹 is Almost impossible to find in Industrial Composite, 𝐁𝐞𝐜𝐚𝐮𝐬𝐞

𝐁𝐞𝐜𝐚𝐮𝐬𝐞 𝐰𝐢𝐭𝐡 𝐢𝐧𝐜𝐫𝐞𝐚𝐬𝐞 𝐭𝐡𝐢𝐜𝐤𝐧𝐞𝐬𝐬 --> 𝐝𝐞𝐜𝐫𝐞𝐚𝐬𝐞 𝐭𝐡𝐞 𝐯𝐚𝐥𝐮𝐞 𝐨𝐟 𝐭𝐡𝐞 𝐨𝐛𝐣𝐞𝐜𝐭 𝐚𝐧𝐝 𝐝𝐞𝐜𝐫𝐞𝐚𝐬𝐞 𝐭𝐫𝐚𝐧𝐬𝐥𝐮𝐜𝐞𝐧𝐭 𝐚𝐧𝐝 𝐢𝐧𝐜𝐫𝐞𝐚𝐬𝐞 𝐥𝐮𝐦𝐢𝐧𝐨𝐮𝐬 𝐭𝐨𝐨 --> 𝐰𝐡𝐢𝐜𝐡 𝐥𝐞𝐚𝐝 𝐭𝐨 𝐆𝐫𝐚𝐲 𝐨𝐫 𝐠𝐫𝐞𝐲𝐢𝐬𝐡 𝐰𝐡𝐢𝐭𝐞 𝐚𝐩𝐩𝐞𝐚𝐫𝐚𝐧𝐜𝐞 𝐨𝐟 𝐜𝐨𝐦𝐩𝐨𝐬𝐢𝐭𝐞

To solve this problem , 𝘫𝘶𝘴𝘵 𝘶𝘴𝘦 𝘩𝘪𝘨𝘩 𝘷𝘢𝘭𝘶𝘦 𝘮𝘢𝘵𝘦𝘳𝘪𝘢𝘭 𝘪𝘯 𝘵𝘩𝘪𝘯𝘯𝘦𝘳 𝘵𝘩𝘪𝘤𝘬𝘯𝘦𝘴𝘴 𝘵𝘰 𝘰𝘣𝘵𝘢𝘪𝘯 𝘵𝘳𝘢𝘯𝘴𝘭𝘶𝘤𝘦𝘯𝘵 𝘦𝘧𝘧𝘦𝘤𝘵 𝘵𝘰𝘰 𝘱𝘭𝘶𝘴 𝘢𝘭𝘭𝘰𝘸 𝘭𝘪𝘨𝘩𝘵 𝘵𝘰 𝘱𝘢𝘴𝘴 𝘵𝘩𝘳𝘰𝘶𝘨𝘩 𝘪𝘵 .

But then another problem appears

Composition behaves similarly to Glass,

Increase the thickness of composite --> makes margins of restoration visible. ( marked )

Which is called( 𝑮𝒍𝒂𝒔𝒔 𝒆𝒇𝒇𝒆𝒄𝒕 )

2)𝙂𝙡𝙖𝙨𝙨 𝙚𝙛𝙛𝙚𝙘𝙩 is a disadvantage of transparent and semi-transparent materials losing their value as their thickness increase. And become grey or blue line between restoration and tooth surface...

Difference between ( 𝙊𝙥𝙖𝙦𝙪𝙚, 𝙏𝙧𝙖𝙣𝙨𝙡𝙪𝙘𝙚𝙣𝙩 𝙖𝙣𝙙 𝙏𝙧𝙖𝙣𝙨𝙥𝙖𝙧𝙚𝙣𝙩 ) 👇

3)𝐄𝐧𝐚𝐦𝐞𝐥 𝐫𝐞𝐟𝐥𝐞𝐜𝐭𝐢𝐯𝐞 𝐢𝐧𝐝𝐞𝐱: Is the way the light travels through an object, in its speed and direction ...

Natural enamel has a 𝗵𝗶𝗴𝗵 𝗿𝗲𝗳𝗹𝗲𝗰𝘁𝗶𝘃𝗲 𝗶𝗻𝗱𝗲𝘅, so when we choose proper composite, should behave 𝗮𝘁 𝗹𝗲𝗮𝘀𝘁 𝗮 𝘀𝗶𝗺𝗶𝗹𝗮𝗿 𝗼𝗿 𝗵𝗶𝗴𝗵𝗲𝗿 𝗿𝗲𝗳𝗹𝗲𝗰𝘁𝗶𝘃𝗲 𝗶𝗻𝗱𝗲𝘅 𝘁𝗵𝗮𝗻 𝗻𝗮𝘁𝘂𝗿𝗮𝗹 𝗲𝗻𝗮𝗺𝗲𝗹 .....