Fig. 7. face, 2: M4M surface) Units of the axis are in μm
Fig. 7. a, b (The marginal discrepancy pattern for group CR and M4M). a Group CR (1: Ceramic surface, 2: CR surface) Units of the axis are in μm. b Group M4M (1: Ceramic surface, 2: M4M surface) Units of the axis are in μm
Fig. 6. Access-hole filling surface areas measurement, average
Fig. 6. Access-hole filling surface areas measurement, average
Fig. 5. Depth and angle at the margin
Fig. 5. Depth and angle at the margin
Fig. 4. Margin depth measurement localization (example: TRA, T = 12 M)
Fig. 4. Margin depth measurement localization (example: TRA, T = 12 M)
Fig. 3. a–e (Filling surface changes): a (ROG, T = 0). b (ROG, T = 1 M). c (ROG, T = 3 M). d (ROG, T = 6 M). e (ROG, T = 12 M)
Fig. 3. a–e (Filling surface changes): a (ROG, T = 0). b (ROG, T = 1 M). c (ROG, T = 3 M). d (ROG, T = 6 M). e (ROG, T = 12 M)
Fig. 2. Occlusal contact point
Fig. 2. Occlusal contact point
Fig. 1. Brush-dip technique
Fig. 1. Brush-dip technique
T = 1 M
T = 3 M
T = 6 M
T = 12 M
No disappearance
CR
53.5% (15/28)
28.5% (8/28)
7.1% (2/28)
3.6% (1/28)
7.1% (2/28)
M4M
28.6% (8/28)
10.7% (3/28)
28.5% (8/28)
28.5% (8/28)
3.6% (1/28)
Table 4 Disappearance of the overfilling. Unit: %
T = 1 M
T = 3 M
T = 6 M
T = 12 M
CR
100
93.2
87.6
83.3
M4M
100
91.1
83.2
77.1
Table 3 Surface areas changes of access-hole filling. Unit: %
Patients
PositionCR
Patients
PositionM4M
T = 0
T = 12
T = 0
T = 12
AMB
13
10
7
AMB
23
10
7
14
6
5
24
8
3
16
8
8
26
8
5
17
10
10
27
8
5
ROG
24
10
7
ROG
14
10
6
26
10
10
16
10
7
27
10
10
17
10
7
NEU
11
4
3
NEU
21
6
5
13
8
7
23
6
5
16
8
7
25
10
10
...
Materials
Product names
Batch numbers
Manufacturer
Ceramic primer
Super-bond UCP
FX1
Sun Medical
Composite
Fantasista
GF11
Sun Medical
Bonding agent
Hybrid bond
FS1/GL1
Sun Medical
Adhesive composite
Bondfill SB
FT2/FS2/FS12
Sun Medical
Table 1 ᅟ
Tanimura, R., Suzuki, S. Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study. Int J Implant Dent 3, 19 (2017). https://doi.org/10.1186/s40729-017-0076-4
Download citation
Received: 14 December 2016
Accepted: 22 April 2017
Published: 05 May 2017
DOI: https://doi.org/10.1186/s40729-017-0076-4
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were m...
8, place du Général Catroux, 75017, Paris, France
Rémy Tanimura
Department of Clinical Community and Sciences, University of Alabama at Birmingham School of Dentistry, 1919 7th Avenue South, Birmingham, AL, 35294-0007, USA
Shiro Suzuki
You can also search for this author in PubMed Google Scholar
You can also search for this author in PubMed Google Scholar
Correspondence to Rémy Tanimur...
The authors thank Sun Medical Corporation for their material supply.
RT and SS carried out the clinical data and their analysis. RT and SS have been involved in drafting the manuscript and approved the final version to be published.
The authors, Rémy Tanimura and Shiro Suzuki, declare that they have no financial, commercial or any other competing interests.
Springer Nature remains neutral with...
de Pereira R P, Rocha CO, Reis JM, Arioli-Filho JN. Influence of sealing of the screw access hole on the fracture resistance of implant-supported restorations. Braz Dent J. 2016;27(2):148–52.
Mihali S, Canjau S, Bratu E, Wang HL. Utilization of ceramic inlays for sealing implant prostheses screw access holes: a case-control study. Int J Oral Maxillofac Implants. 2016;31(5):1142–9.
Download r...
Taira Y, Sakai M, Sawase T. Effects of primer containing silane and thiophosphate monomers on bonding resin to a leucite-reinforced ceramic. J Dent. 2012;40(5):353–8.
Kato H, Matsumura H, Tanaka T, Atsuta M. Bond strength and durability of porcelain bonding systems. J Prosthet Dent. 1996;75(2):163–8.
Queiroz JR, Souza RO, Nogueira Junior Jr L, Ozcan M, Bottino MA. Influence of acid-etching a...
Korsch M, Walther W. Peri-implantitis associated with type of cement: a retrospective analysis of different types of cement and their clinical correlation to the peri-implant tissue. Clin Implant Dent Relat Res. 2015;17(Suppl 2):e434–43.
Linkevicius T, Vindasiute E, Puisys A, Linkeviciene L, Maslova N, Puriene A. The influence of the cementation margin position on the amount of undetected cemen...
Millen C, Brägger U, Wittneben JG. Influence of prosthesis type and retention mechanism on complications with fixed implant-supported prostheses: a systematic review applying multivariate analyses. Int J Oral Maxillofac Implants. 2015;30(1):110–24.
Guichet DL, Caputo AA, Choi H, Sorensen JA. Passivity of fit and marginal opening in screw- or cement-retained implant fixed partial denture desig...
Within the limitation of the study, it was concluded that:
The null-hypothesis “superficial and marginal deterioration of M4M and CR would not be significantly different” was accepted.
The M4M (modified 4-META/MMA-TBB resin) and CR (composite resin) combined with a ceramic primer showed comparable characteristics (marginal integrity and wear behavior) in an access hole filling.
The esthetic...
The analysis for the ratio of access-hole with or without marginal staining at the time of T = 12 M showed that the results in group CR (12/16) and in group M4M (12/16) were the same. For this reason, the marginal discrepancy pattern, different in both groups did not influence the aesthetical result. The occlusal contact point (A, B, or C) was compared to the marginal staining rate. Among the...
Focusing on numbers of access-hole showing a disappearance of the overfilling in an early period (up to T = 3 M), groups CR and M4M exhibited 82% (23/28) and 39.3% (11/28), respectively (Table 4). This can be explained by the differences of mechanical properties of both materials. The elastic moduli of M4M and CR are 1.9 and 7.9 MPa, respectively. Flexural strength of M4M is 66 MPa which i...
The in vivo evaluation is quite different from that of the in vitro analysis. In the previous study, all the specimens were calibrated to a flat surface with 2.5 mm diameter. In present study, each access hole had a different dimension and configuration. The filling surfaces were often ø3 to 4 mm in diameter. Access-holes located in the occlusal groove area or in the inclined cusp surface induc...
Nowadays, implant screw-retained prosthesis becomes a popular mode of implant supra-structure restoration. Cement retained implant restoration has issues including irretrievability and difficulty of controlling the cement excess beyond the abutment joint. The cement excess can be a major cause of peri-implantitis [13,14,15]. Screw-retained implant restoration has also some disadvantages including ...
Among the 56 access holes, no filling was dislodged during 12 months, and no complaint was registered from the patients regarding functional and aesthetical aspects.
The results for surface areas changes of access-hole fillings at respective intervals were summarized in Table 3 and Fig. 6. The mean values of the change from T = 1 M to T = 12 M were 77.1 ± 13.1% for group M4M and...
The marginal depth of the access-hole filling at T = 0, T = 1 M, T = 3 M, and T = 6 M could not be defined successfully because of the overfilling phenomenon which disrupted the measurement of marginal gap depth and angle (Fig. 3a–e). Only the marginal depth and angle at T = 12 M could be measured with the same digital microscope, and the mean value for each group was ca...
Patients who received a metal framed ceramic screw retained implant crown or bridge were included in this study. These access holes were delimited only by ceramic. Those with metal surface exposure were excluded from this study. Patients with edentulous arch or section, full or partial denture as antagonists were excluded from the study. During the evaluation period, 2 patients (male) dropped out ...
A total of 60 access-holes in 14 patients (5 male and 9 female) aging from 34 to 69 were restored and observed during 12 months. All subjects were informed about the study, and their written consent to participate in the study was taken.
The materials used in this study are presented in Table 1. They include a phosphoric acid monomer ceramic primer (CP): UCP (Super-Bond Universal Ceramic Primer...
The retention of implant-supported prostheses is provided by the use of a screw or cement. Recently, it was demonstrated that cement-retained prostheses had a higher rate of technical and biological complications [1], despite a better passive fit than the screw-retained restorations [2]. The CAD/CAM development of the implant-supported prostheses allows a better passively fit with screw-retained p...
Screw retained implant prostheses seem to be an efficient restorative method to prevent peri-implantitis caused by cement excess around the abutment. The drawback of the screw-retained prostheses is the difficulty to realize an efficient access-hole filling functionally and aesthetically. Up to now, few in vitro and in vivo studies were reported in the literature. The aim of this study was to eval...
Fig. 7. CR and M4M). a Group CR (1: Ceramic surface, 2: CR surface) Units of the axis are in μm. b Group M4M (1: Ceramic surface, 2: M4M surface) Units of the axis are in μm
Fig. 7. a, b (The marginal discrepancy pattern for group CR and M4M). a Group CR (1: Ceramic surface, 2: CR surface) Units of the axis are in μm. b Group M4M (1: Ceramic surface, 2: M4M surface) Units of the axis are i...
Fig. 6. Access-hole filling surface areas measurement, average
Fig. 6. Access-hole filling surface areas measurement, average
Fig. 5. Depth and angle at the margin
Fig. 5. Depth and angle at the margin
Fig. 4. Margin depth measurement localization (example: TRA, T = 12 M)
Fig. 4. Margin depth measurement localization (example: TRA, T = 12 M)
Fig. 3. ROG, T = 1 M). c (ROG, T = 3 M). d (ROG, T = 6 M). e (ROG, T = 12 M)
Fig. 3. a–e (Filling surface changes): a (ROG, T = 0). b (ROG, T = 1 M). c (ROG, T = 3 M). d (ROG, T = 6 M). e (ROG, T = 12 M)
Fig. 2. Occlusal contact point
Fig. 2. Occlusal contact point
Fig. 1. Brush-dip technique
Fig. 1. Brush-dip technique
T = 1 M
T = 3 M
T = 6 M
T = 12 M
No disappearance
CR
53.5% (15/28)
...
T = 1 M
T = 3 M
T = 6 M
T = 12 M
CR
100
93.2
87.6
...
Patients
Position
CR
Patients
Position
M4M
T = 0
T = 12
...
Materials
Product names
Batch numbers
Manufacturer
Ceramic primer
Super-bond UCP
...
Tanimura, R., Suzuki, S. Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study.
Int J Implant Dent 3, 19 (2017). https://doi.org/10.1186/s40729-017-0076-4
Download citation
Received: 14 December 2016
Accepted: 22 April 2017
Published: 05 May 2017
DOI: https://doi.org/10.1186/s40729-017-0076-4
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were...
8, place du Général Catroux, 75017, Paris, France
Rémy Tanimura
Department of Clinical Community and Sciences, University of Alabama at Birmingham School of Dentistry, 1919 7th Avenue South, Birmingham, AL, 35294-0007, USA
Shiro Suzuki
You can also search for this author in
PubMed Google Scholar
You can also search for this author in
PubMe...
The authors thank Sun Medical Corporation for their material supply.
RT and SS carried out the clinical data and their analysis. RT and SS have been involved in drafting the manuscript and approved the final version to be published.
The authors, Rémy Tanimura and Shiro Suzuki, declare that they have no financial, commercial or any other competing interests.
Springer Nature remains neutral with...
de Pereira R P, Rocha CO, Reis JM, Arioli-Filho JN. Influence of sealing of the screw access hole on the fracture resistance of implant-supported restorations. Braz Dent J. 2016;27(2):148–52.
Mihali S, Canjau S, Bratu E, Wang HL. Utilization of ceramic inlays for sealing implant prostheses screw access holes: a case-control study. Int J Oral Maxillofac Implants. 2016;31(5):1142–9.
Download r...
Taira Y, Sakai M, Sawase T. Effects of primer containing silane and thiophosphate monomers on bonding resin to a leucite-reinforced ceramic. J Dent. 2012;40(5):353–8.
Kato H, Matsumura H, Tanaka T, Atsuta M. Bond strength and durability of porcelain bonding systems. J Prosthet Dent. 1996;75(2):163–8.
Queiroz JR, Souza RO, Nogueira Junior Jr L, Ozcan M, Bottino MA. Influence of acid-etching a...
Korsch M, Walther W. Peri-implantitis associated with type of cement: a retrospective analysis of different types of cement and their clinical correlation to the peri-implant tissue. Clin Implant Dent Relat Res. 2015;17(Suppl 2):e434–43.
Linkevicius T, Vindasiute E, Puisys A, Linkeviciene L, Maslova N, Puriene A. The influence of the cementation margin position on the amount of undetected cemen...
Millen C, Brägger U, Wittneben JG. Influence of prosthesis type and retention mechanism on complications with fixed implant-supported prostheses: a systematic review applying multivariate analyses. Int J Oral Maxillofac Implants. 2015;30(1):110–24.
Guichet DL, Caputo AA, Choi H, Sorensen JA. Passivity of fit and marginal opening in screw- or cement-retained implant fixed partial denture desig...
Within the limitation of the study, it was concluded that:
The null-hypothesis “superficial and marginal deterioration of M4M and CR would not be significantly different” was accepted.
The M4M (modified 4-META/MMA-TBB resin) and CR (composite resin) combined with a ceramic primer showed comparable characteristics (marginal integrity and wear behavior) in an access hole filling.
The esthetic...
The analysis for the ratio of access-hole with or without marginal staining at the time of T = 12 M showed that the results in group CR (12/16) and in group M4M (12/16) were the same. For this reason, the marginal discrepancy pattern, different in both groups did not influence the aesthetical result. The occlusal contact point (A, B, or C) was compared to the marginal staining rate. Among the...
Focusing on numbers of access-hole showing a disappearance of the overfilling in an early period (up to T = 3 M), groups CR and M4M exhibited 82% (23/28) and 39.3% (11/28), respectively (Table 4). This can be explained by the differences of mechanical properties of both materials. The elastic moduli of M4M and CR are 1.9 and 7.9 MPa, respectively. Flexural strength of M4M is 66 MPa which i...
The in vivo evaluation is quite different from that of the in vitro analysis. In the previous study, all the specimens were calibrated to a flat surface with 2.5 mm diameter. In present study, each access hole had a different dimension and configuration. The filling surfaces were often ø3 to 4 mm in diameter. Access-holes located in the occlusal groove area or in the inclined cusp surface induc...
Nowadays, implant screw-retained prosthesis becomes a popular mode of implant supra-structure restoration. Cement retained implant restoration has issues including irretrievability and difficulty of controlling the cement excess beyond the abutment joint. The cement excess can be a major cause of peri-implantitis [13,14,15]. Screw-retained implant restoration has also some disadvantages including ...
Among the 56 access holes, no filling was dislodged during 12 months, and no complaint was registered from the patients regarding functional and aesthetical aspects.
The results for surface areas changes of access-hole fillings at respective intervals were summarized in Table 3 and Fig. 6. The mean values of the change from T = 1 M to T = 12 M were 77.1 ± 13.1% for group M4M and...
The marginal depth of the access-hole filling at T = 0, T = 1 M, T = 3 M, and T = 6 M could not be defined successfully because of the overfilling phenomenon which disrupted the measurement of marginal gap depth and angle (Fig. 3a–e). Only the marginal depth and angle at T = 12 M could be measured with the same digital microscope, and the mean value for each group was ca...
Patients who received a metal framed ceramic screw retained implant crown or bridge were included in this study. These access holes were delimited only by ceramic. Those with metal surface exposure were excluded from this study. Patients with edentulous arch or section, full or partial denture as antagonists were excluded from the study. During the evaluation period, 2 patients (male) dropped out ...
A total of 60 access-holes in 14 patients (5 male and 9 female) aging from 34 to 69 were restored and observed during 12 months. All subjects were informed about the study, and their written consent to participate in the study was taken.
The materials used in this study are presented in Table 1. They include a phosphoric acid monomer ceramic primer (CP): UCP (Super-Bond Universal Ceramic Primer...
The retention of implant-supported prostheses is provided by the use of a screw or cement. Recently, it was demonstrated that cement-retained prostheses had a higher rate of technical and biological complications [1], despite a better passive fit than the screw-retained restorations [2]. The CAD/CAM development of the implant-supported prostheses allows a better passively fit with screw-retained p...
Screw retained implant prostheses seem to be an efficient restorative method to prevent peri-implantitis caused by cement excess around the abutment. The drawback of the screw-retained prostheses is the difficulty to realize an efficient access-hole filling functionally and aesthetically. Up to now, few in vitro and in vivo studies were reported in the literature. The aim of this study was to eval...
Fig. 7. and M4M). a Group CR (1: Ceramic surface, 2: CR surface) Units of the axis are in μm. b Group M4M (1: Ceramic surface, 2: M4M surface) Units of the axis are in μm
Fig. 7. a, b (The marginal discrepancy pattern for group CR and M4M). a Group CR (1: Ceramic surface, 2: CR surface) Units of the axis are in μm. b Group M4M (1: Ceramic surface, 2: M4M surface) Units of the axis are in ...
Fig. 6. Access-hole filling surface areas measurement, average
Fig. 6. Access-hole filling surface areas measurement, average
Fig. 5. Depth and angle at the margin
Fig. 5. Depth and angle at the margin
Fig. 4. Margin depth measurement localization (example: TRA, T = 12 M)
Fig. 4. Margin depth measurement localization (example: TRA, T = 12 M)
Fig. 3. 1 M). c (ROG, T = 3 M). d (ROG, T = 6 M). e (ROG, T = 12 M)
Fig. 3. a–e (Filling surface changes): a (ROG, T = 0). b (ROG, T = 1 M). c (ROG, T = 3 M). d (ROG, T = 6 M). e (ROG, T = 12 M)
Fig. 2. Occlusal contact point
Fig. 2. Occlusal contact point
Fig. 1. Brush-dip technique
Fig. 1. Brush-dip technique
T = 1 M
T = 3 M
T = 6 M
T = 12 M
No disappearance
CR
53.5% (15/28)
...
T = 1 M
T = 3 M
T = 6 M
T = 12 M
CR
100
93.2
87.6
...
Patients
Position
CR
Patients
Position
M4M
T = 0
T = 12
...
Materials
Product names
Batch numbers
Manufacturer
Ceramic primer
Super-bond UCP
...
Tanimura, R., Suzuki, S. Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study.
Int J Implant Dent 3, 19 (2017). https://doi.org/10.1186/s40729-017-0076-4
Download citation
Received: 14 December 2016
Accepted: 22 April 2017
Published: 05 May 2017
DOI: https://doi.org/10.1186/s40729-017-0076-4
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were...
8, place du Général Catroux, 75017, Paris, France
Rémy Tanimura
Department of Clinical Community and Sciences, University of Alabama at Birmingham School of Dentistry, 1919 7th Avenue South, Birmingham, AL, 35294-0007, USA
Shiro Suzuki
You can also search for this author in
PubMed Google Scholar
You can also search for this author in
PubMe...
The authors thank Sun Medical Corporation for their material supply.
RT and SS carried out the clinical data and their analysis. RT and SS have been involved in drafting the manuscript and approved the final version to be published.
The authors, Rémy Tanimura and Shiro Suzuki, declare that they have no financial, commercial or any other competing interests.
Springer Nature remains neutral with...
The authors thank Sun Medical Corporation for their material supply.
RT and SS carried out the clinical data and their analysis. RT and SS have been involved in drafting the manuscript and approved the final version to be published.
The authors, Rémy Tanimura and Shiro Suzuki, declare that they have no financial, commercial or any other competing interests.
Springer Nature remains neutral with...
de Pereira R P, Rocha CO, Reis JM, Arioli-Filho JN. Influence of sealing of the screw access hole on the fracture resistance of implant-supported restorations. Braz Dent J. 2016;27(2):148–52.
Mihali S, Canjau S, Bratu E, Wang HL. Utilization of ceramic inlays for sealing implant prostheses screw access holes: a case-control study. Int J Oral Maxillofac Implants. 2016;31(5):1142–9.
Download r...
Taira Y, Sakai M, Sawase T. Effects of primer containing silane and thiophosphate monomers on bonding resin to a leucite-reinforced ceramic. J Dent. 2012;40(5):353–8.
Kato H, Matsumura H, Tanaka T, Atsuta M. Bond strength and durability of porcelain bonding systems. J Prosthet Dent. 1996;75(2):163–8.
Queiroz JR, Souza RO, Nogueira Junior Jr L, Ozcan M, Bottino MA. Influence of acid-etching a...
Korsch M, Walther W. Peri-implantitis associated with type of cement: a retrospective analysis of different types of cement and their clinical correlation to the peri-implant tissue. Clin Implant Dent Relat Res. 2015;17(Suppl 2):e434–43.
Linkevicius T, Vindasiute E, Puisys A, Linkeviciene L, Maslova N, Puriene A. The influence of the cementation margin position on the amount of undetected cemen...
Millen C, Brägger U, Wittneben JG. Influence of prosthesis type and retention mechanism on complications with fixed implant-supported prostheses: a systematic review applying multivariate analyses. Int J Oral Maxillofac Implants. 2015;30(1):110–24.
Guichet DL, Caputo AA, Choi H, Sorensen JA. Passivity of fit and marginal opening in screw- or cement-retained implant fixed partial denture desig...
Within the limitation of the study, it was concluded that:
The null-hypothesis “superficial and marginal deterioration of M4M and CR would not be significantly different” was accepted.
The M4M (modified 4-META/MMA-TBB resin) and CR (composite resin) combined with a ceramic primer showed comparable characteristics (marginal integrity and wear behavior) in an access hole filling.
The esthetic...
The analysis for the ratio of access-hole with or without marginal staining at the time of T = 12 M showed that the results in group CR (12/16) and in group M4M (12/16) were the same. For this reason, the marginal discrepancy pattern, different in both groups did not influence the aesthetical result. The occlusal contact point (A, B, or C) was compared to the marginal staining rate. Among the...
Focusing on numbers of access-hole showing a disappearance of the overfilling in an early period (up to T = 3 M), groups CR and M4M exhibited 82% (23/28) and 39.3% (11/28), respectively (Table 4). This can be explained by the differences of mechanical properties of both materials. The elastic moduli of M4M and CR are 1.9 and 7.9 MPa, respectively. Flexural strength of M4M is 66 MPa which i...
The in vivo evaluation is quite different from that of the in vitro analysis. In the previous study, all the specimens were calibrated to a flat surface with 2.5 mm diameter. In present study, each access hole had a different dimension and configuration. The filling surfaces were often ø3 to 4 mm in diameter. Access-holes located in the occlusal groove area or in the inclined cusp surface induc...
Nowadays, implant screw-retained prosthesis becomes a popular mode of implant supra-structure restoration. Cement retained implant restoration has issues including irretrievability and difficulty of controlling the cement excess beyond the abutment joint. The cement excess can be a major cause of peri-implantitis [13,14,15]. Screw-retained implant restoration has also some disadvantages including ...
Among the 56 access holes, no filling was dislodged during 12 months, and no complaint was registered from the patients regarding functional and aesthetical aspects.
The results for surface areas changes of access-hole fillings at respective intervals were summarized in Table 3 and Fig. 6. The mean values of the change from T = 1 M to T = 12 M were 77.1 ± 13.1% for group M4M and...
The marginal depth of the access-hole filling at T = 0, T = 1 M, T = 3 M, and T = 6 M could not be defined successfully because of the overfilling phenomenon which disrupted the measurement of marginal gap depth and angle (Fig. 3a–e). Only the marginal depth and angle at T = 12 M could be measured with the same digital microscope, and the mean value for each group was ca...
Patients who received a metal framed ceramic screw retained implant crown or bridge were included in this study. These access holes were delimited only by ceramic. Those with metal surface exposure were excluded from this study. Patients with edentulous arch or section, full or partial denture as antagonists were excluded from the study. During the evaluation period, 2 patients (male) dropped out ...
A total of 60 access-holes in 14 patients (5 male and 9 female) aging from 34 to 69 were restored and observed during 12 months. All subjects were informed about the study, and their written consent to participate in the study was taken.
The materials used in this study are presented in Table 1. They include a phosphoric acid monomer ceramic primer (CP): UCP (Super-Bond Universal Ceramic Primer...
The retention of implant-supported prostheses is provided by the use of a screw or cement. Recently, it was demonstrated that cement-retained prostheses had a higher rate of technical and biological complications [1], despite a better passive fit than the screw-retained restorations [2]. The CAD/CAM development of the implant-supported prostheses allows a better passively fit with screw-retained p...
Screw retained implant prostheses seem to be an efficient restorative method to prevent peri-implantitis caused by cement excess around the abutment. The drawback of the screw-retained prostheses is the difficulty to realize an efficient access-hole filling functionally and aesthetically. Up to now, few in vitro and in vivo studies were reported in the literature. The aim of this study was to eval...