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Background
Vertical marginal fit has been frequently associated with implant prostheses success. Recently a cemented-screwed prostheses was proposed, raising some concern about excess cement removal and marginal fit reduction.
Aims
The purpose of this in vitro study was to assess the minor vertical marginal fit of cemented-screwed and cemented single prosthesis.
Methods
Single prostheses were fabricated for twenty 4.5 x 10 mm replica titanium dental implants. Two groups of ten implants each one were randomly allocated. One group received cemented-screwed prostheses and the other cemented prostheses fabricated on 5.5 mm solid abutments. The single prostheses were cemented with resin. After cement settings, cement excess was carefully removed in both groups. Inspections of abutment/prostheses vertical marginal fit were measured using scanning electronic microscopy under x800 magnification. Independent sample student T test was used to detect differences between groups (P ≤, 0.05).
Results
The cemented-screwed group (57.80 ±2.34 µm) had statistical significant better vertical marginal fit than the cemented prosthesis group (64.40 ±2.23 µm) (p<.001).
Conclusions
The vertical marginal fit on cement-screw single prosthesis was significantly more accurate than the vertical marginal fit on cement single prosthesis. This new technique will diminish the marginal fit with less bacterial filtration, will reduce excess cement remanent and will retrieve less biomechanics problems.
Background
Vertical marginal fit has been frequently associated with implant prostheses success. Recently a cemented-screwed prostheses was proposed, raising some concern about excess cement removal and marginal fit reduction.
Aims
The purpose of this in vitro study was to assess the minor vertical marginal fit of cemented-screwed and cemented single prosthesis.
Methods
Single prostheses were fabricated for twenty 4.5 x 10 mm replica titanium dental implants. Two groups of ten implants each one were randomly allocated. One group received cemented-screwed prostheses and the other cemented prostheses fabricated on 5.5 mm solid abutments. The single prostheses were cemented with resin. After cement settings, cement excess was carefully removed in both groups. Inspections of abutment/prostheses vertical marginal fit were measured using scanning electronic microscopy under x800 magnification. Independent sample student T test was used to detect differences between groups (P ≤, 0.05).
Results
The cemented-screwed group (57.80 ±2.34 µm) had statistical significant better vertical marginal fit than the cemented prosthesis group (64.40 ±2.23 µm) (p<.001).
Conclusions
The vertical marginal fit on cement-screw single prosthesis was significantly more accurate than the vertical marginal fit on cement single prosthesis. This new technique will diminish the marginal fit with less bacterial filtration, will reduce excess cement remanent and will retrieve less biomechanics problems.
Background
Vertical marginal fit has been frequently associated with implant prostheses success. Recently a cemented-screwed prostheses was proposed, raising some concern about excess cement removal and marginal fit reduction.
Aims
The purpose of this in vitro study was to assess the minor vertical marginal fit of cemented-screwed and cemented single prosthesis.
Methods
Single prostheses were fabricated for twenty 4.5 x 10 mm replica titanium dental implants. Two groups of ten implants each one were randomly allocated. One group received cemented-screwed prostheses and the other cemented prostheses fabricated on 5.5 mm solid abutments. The single prostheses were cemented with resin. After cement settings, cement excess was carefully removed in both groups. Inspections of abutment/prostheses vertical marginal fit were measured using scanning electronic microscopy under x800 magnification. Independent sample student T test was used to detect differences between groups (P ≤, 0.05).
Results
The cemented-screwed group (57.80 ±2.34 µm) had statistical significant better vertical marginal fit than the cemented prosthesis group (64.40 ±2.23 µm) (p<.001).
Conclusions
The vertical marginal fit on cement-screw single prosthesis was significantly more accurate than the vertical marginal fit on cement single prosthesis. This new technique will diminish the marginal fit with less bacterial filtration, will reduce excess cement remanent and will retrieve less biomechanics problems.
Background
Vertical marginal fit has been frequently associated with implant prostheses success. Recently a cemented-screwed prostheses was proposed, raising some concern about excess cement removal and marginal fit reduction.
Aims
The purpose of this in vitro study was to assess the minor vertical marginal fit of cemented-screwed and cemented single prosthesis.
Methods
Single prostheses were fabricated for twenty 4.5 x 10 mm replica titanium dental implants. Two groups of ten implants each one were randomly allocated. One group received cemented-screwed prostheses and the other cemented prostheses fabricated on 5.5 mm solid abutments. The single prostheses were cemented with resin. After cement settings, cement excess was carefully removed in both groups. Inspections of abutment/prostheses vertical marginal fit were measured using scanning electronic microscopy under x800 magnification. Independent sample student T test was used to detect differences between groups (P ≤, 0.05).
Results
The cemented-screwed group (57.80 ±2.34 µm) had statistical significant better vertical marginal fit than the cemented prosthesis group (64.40 ±2.23 µm) (p<.001).
Conclusions
The vertical marginal fit on cement-screw single prosthesis was significantly more accurate than the vertical marginal fit on cement single prosthesis. This new technique will diminish the marginal fit with less bacterial filtration, will reduce excess cement remanent and will retrieve less biomechanics problems.