Clin Oral Invest DOI 10.1007/s00784-014-1257-7
ORIGINAL ARTICLE
Surface scratch assessment of titanium implant abutments and cementum following instrumentation with metal curettes P. M. Anastassiadis & C. Hall & V. Marino & P. M. Bartold
Received: 24 February 2014 / Accepted: 13 May 2014 # Springer-Verlag Berlin Heidelberg 2014
Abstract Objectives This study was conducted to compare the surface scratch resistance of titanium implant abutments and cementum to evaluate the impact of scaling with metal curettes on both surfaces. Materials and methods A standard in vitro force of 14 N was used to assess the scratch width and depth created by curettes on extracted human tooth roots and titanium implant abutments. Scratch width and depth were analysed using a stereomicroscope and non-contact surface profilometry. Results The mean force applied during test scaling procedures by experienced volunteer operators was 14 N. Mechanical scaling using this force in vitro of cementum produced a mean scratch width of 59.4±1.9 μm, N=20, and scratch depth of 0.86±0.03 μm, N=20, compared to the titanium abutments’ mean scratch width of 30.8±1.9 μm, N=6, and scratch depth of 0.34±0.02 μm, N=6. These differences were statistically significant (P0.05). This force was therefore selected for use in the mechanical test rig to scratch cementum and the titanium abutments. Scratch analysis comparison between cementum, PMMA test material and the titanium abutments
Fig. 2 Examples of scratch surfaces on a titanium implant abutment and b human tooth root cementum
A comparison of the scratch characteristics between the cementum, titanium implant abutments and test PMMA material using the predetermined 14-N scratch load is presented in Fig. 4. The mechanical scaling of cementum produced a mean scratch width of 59.4±1.9 μm and scratch depth of 0.86± 0.03 μm compared to the titanium abutments’ mean scratch width of 30.8±1.9 μm and scratch depth of 0.34±0.02 μm. The mean scratch width and depth for the PMMA test material were 73.1±5.9 and 1.29±0.09 μm, respectively. A comparison of the scratch analysis results for the cementum, PMMA test material and titanium abutments demonstrated a statistically significant difference between the groups (P
ORIGINAL ARTICLE
Surface scratch assessment of titanium implant abutments and cementum following instrumentation with metal curettes P. M. Anastassiadis & C. Hall & V. Marino & P. M. Bartold
Received: 24 February 2014 / Accepted: 13 May 2014 # Springer-Verlag Berlin Heidelberg 2014
Abstract Objectives This study was conducted to compare the surface scratch resistance of titanium implant abutments and cementum to evaluate the impact of scaling with metal curettes on both surfaces. Materials and methods A standard in vitro force of 14 N was used to assess the scratch width and depth created by curettes on extracted human tooth roots and titanium implant abutments. Scratch width and depth were analysed using a stereomicroscope and non-contact surface profilometry. Results The mean force applied during test scaling procedures by experienced volunteer operators was 14 N. Mechanical scaling using this force in vitro of cementum produced a mean scratch width of 59.4±1.9 μm, N=20, and scratch depth of 0.86±0.03 μm, N=20, compared to the titanium abutments’ mean scratch width of 30.8±1.9 μm, N=6, and scratch depth of 0.34±0.02 μm, N=6. These differences were statistically significant (P0.05). This force was therefore selected for use in the mechanical test rig to scratch cementum and the titanium abutments. Scratch analysis comparison between cementum, PMMA test material and the titanium abutments
Fig. 2 Examples of scratch surfaces on a titanium implant abutment and b human tooth root cementum
A comparison of the scratch characteristics between the cementum, titanium implant abutments and test PMMA material using the predetermined 14-N scratch load is presented in Fig. 4. The mechanical scaling of cementum produced a mean scratch width of 59.4±1.9 μm and scratch depth of 0.86± 0.03 μm compared to the titanium abutments’ mean scratch width of 30.8±1.9 μm and scratch depth of 0.34±0.02 μm. The mean scratch width and depth for the PMMA test material were 73.1±5.9 and 1.29±0.09 μm, respectively. A comparison of the scratch analysis results for the cementum, PMMA test material and titanium abutments demonstrated a statistically significant difference between the groups (P
