11-13 PFM preparation for Lab lesson Dr.Hsu Min Hsun Chung Shan Medical University, Taiwan

1. 11 - 13
PFM Bridge Preparation

2. Shoulder
Chamfer
Wing
※ Incisor notch

3. 1 mm
Shoulder
0.5 mm
Chamfer
2 mm
Reduction
1.5 mm
Reduction
1 mm
Reduction

4. Curved
Incisor Bevel Rounding
Evengingiva
CEJ
6º Taper

5. B
P
Continuous
Contact
Line

6. B
P
XO

7. 6º Taper
11

8. 6º Taper
too
11

9. 13
6º Taper

10. 13
6º Taper
too

11. 2 planes
( B & P )
13

12. Incisor reduction
morphology
13

17. • 以上所述的所有修磨條件都要符合。
• 11 & 13 彼此平⾏行度要對。

18. Prepare 順序參考
• 做 11 & 13 Guided groove ( chamfer / 6º / supra )
• 11 & 13 palatal fossa 沒有 Guided groove
• 11 & 13 incisor reduction
• 開 Contact ( 11 mesial & 13 distal )
• 11 mesial wall ➡ 13 mesial wall 彼此平⾏行, even
• 11 distal wall ➡ 13 distal wall 彼此平⾏行, even

19. Prepare 順序參考
• 11 palatal wall ➡ 13 palatal wall 彼此平⾏行 , even
• 11 buccal cervical 1/2 (1/3) wall ➡ 13 Buccal cervical
1/2 (1/3) wall 彼此平⾏行, Chamfer / supragingiva
• 做 11 & 13 Shoulder margin , even
• 做 Wing, 6º
• 連接 Buccal Shoulder margin 與 Palatal Chamfer margin
• 做 Incisor bevel

20. Prepare 順序參考
• 11 & 13 Palatal fossa reduction
• Rounding
• Double check