Table 4 Mechanical outcomes

Andersson et al. 2001 [15]

N/A

5 during prep or placement

2 minor chip fractures (B)

2 after loading (1 M and 7 M)

No

crown fracture of c group at 2 Y

7%

8.99%

Galluci et al. 2011b [51]

N/A

No

No

2 minor ceramic chipping in t

No

10.00%

Hosseini et al. 2011 [66]

N/A

No

No

1 ceramic chipping and 1 crown loss of retention at 1Y in metal group

No

2.67%

Thoma et al. 2016a [47]

USPHS

1 in t before 1 Y

No

1 chipping (in t) and 3 occlusal roughness (in c) at 1 Y

5%

25.00%

Carrillo de Albornoz et al. 2014 [67]

N/A

2 (in t)

No

No

8 %

8.00%

Baldini et al. 2016 [68]

N/A

No

No

No

No

0.00%

Paolantoni et al. 2016 [69]

N/A

2 (one piece)

1 (two-piece)

No

3 all-ceramic (one piece) fractured (26 M)

10.3%

8.11%

Wittneben et al. 2017 [58]

Wittneben et al. 2020 [59]

N/A

No

No

1 crown fracture (in t) at 1 Y

1 major ceramic chipping

1 crown replacement due to esthetics at 3 Y (in c)

No

7.69%

Amorfini et al. 2018 [73]

N/A

1 in CR

2

one in each

1 chipping in SR

1 crown decementation

3%

15.63%

Eisner et al. 2018 [49]

USPHS

No

1 (in t) at 3Y

2 (one in each group) minor chipping

6 (4t/2c) occlusal wear at 3 Y

5% (same as 1Y)

45.00%

Thoma et al. 2018a [54]

USPHS

No

No

2 minor chipping in CR at B

1 poor marginal adaptation in CR at B and 6M

50% contact points alpha score at B and 6M

N/A

9.09%

Heierle et al. 2019 [53]

USPHS

1 in SR

No

1 veneer fracture in SR

4 in each group occlusal wear

3.7%

14.71%

Laass et al. 2019 [50]

USPHS

No

No

12 slight occlusal roughness (5t, 7c)

2 larger occlusal roughness

2 minor chipping

5% (same as 1Y)

80.00%

Kraus et al. 2019 [57]

USPHS

6 (2 in CR and 4 in SR)

No

Slight occlusal roughness: 4 in SR and 9 in CR

Minor chipping in 1 in CR

13.6%

45.45%