Answer the three types of tooth veneer preparation

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It is often said that there are three types of tooth veneer preparation, including window type, docking type and winding type. Today, we mainly talk about the difference between the window type, butt type and winding type of tooth veneer preparation. If you don't know, you should follow Xiao Bian to have a look.

Let's start with three types of veneer preparation: windowing type, docking type and wrapping type

1. Preparation for opening the window - just like the window on the wall, cut a layer on the surface of the teeth.

Preparation process of windowing tooth body:

① Lip depth setting, ② Lip preparation.

2. Butt preparation - just like bricklaying, it is connected to the surface of teeth.

Butt tooth preparation process:

① Cut edge depth, ② cut end preparation, ③ cut outspread seam preparation, ④ finish polishing.

3. Winding preparation: just like the fish hook, it is more suitable for winding preparation from one side to the other, because there are enough abutment teeth at the edge.

Next, let's look at the differences between the three types of tooth veneer preparation

1. Aesthetics: The window opening type of tooth porcelain veneer has better aesthetics, while the wrapped and butt joint type are inferior to the window opening type.

2. Amount of molars: The amount of molars is small when the window is opened, which almost does not hurt the teeth. The number of abutting molars is medium, and the number of porcelain veneers around molars is large. (23 US, 6 zco, m)

3. Impact on occlusal relationship: The window opening type of dental porcelain veneer does not affect the occlusal relationship of teeth. The butt type may affect the occlusal relationship of teeth, but the impact is not significant. The wrapped type has a greater impact on the occlusal relationship of teeth.

4. Positioning direction: window opening - lip face; Butt - Lip and tongue sometimes incised; Wrap - Lip and tongue cut edge.

According to the difference between the above three types of tooth veneer preparation: window opening type, butt joint type and winding type, it is not recommended to use winding tooth porcelain veneer. The relatively good trimming preparation type is window opening type. So when you do porcelain veneers, you know which preparation method to choose.

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