From: Removal capability, implant-abutment connection damage and thermal effect using ultrasonic and drilling techniques for the extraction of fractured abutment screws: an in vitro study
Study Group
n
Mean
SD
Minimum
Maximum
DT
10
38.12 a
10.82
30.30
56.50
UT
78.52 b
5.43
69.80
83.90