Fit Accuracy of Removable Partial Denture Frameworks Fabricated with CAD/CAM, Rapid Prototyping, and Conventional Techniques: A Systematic Review

Table 6

Newcastle-Ottawa quality assessment of selected studies.

Author ID year	Selection	Comparability	Exposure	Total
Ye et al. [13]				5
Almufleh et al. [14]				7
Bajunaid et al. [15]				5
Maryod et al. [16]				6
Arnold et al. [17]				6
Soltanzadeh et al. [18]				6
Tregerman et al. [19]				6
Chen et al. [20]				5
Honqqiang et al. [21]				3

A study can be awarded a maximum of 1 star for each numbered item within the selection and exposure categories. A maximum of 2 stars can be given for comparability. Each study can be awarded a total of 9 stars. A study was rated to have a low risk of biasness if it received the maximum allowed number of 9 “stars” while moderate risk if it received 8, 7, or 6 “stars” and high risk if it received 5 “stars” or less.