Discussion : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study [1]
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 the difficulty to get a right positioning of the access-hole compatible with a suitable aesthetic appearance and the aesthetic result of the access-hole restoration [16]. Inclined abutment or angling the screw channel can be an option to ameliorate the aesthetical outcomes [17, 18]. Moving the access hole to an occlusal or palatal/lingual zone would increase the indication of screw retained implant restoration. The development of the computer-assisted implant surgery increases the use of the screw-retained prosthesis compared to the cement retained method [19, 20]. Nevertheless, the integrity of the filling of the access hole is necessary to preserve to occlusal function and the aesthetic outcomes. Moreover, the access hole filling contributes to reinforce the surrounding ceramic [9].
In this context, access-hole filling is a common clinical procedure, but studies are quite limited in the literature. Photo-polymerizing resin composites have been widely used to fill the ceramic access holes, but unfortunately, the prognoses were less favorable [21,22,23]. The use of an efficient ceramic primer (CP) containing phosphoric acid monomer is mandatory to ensure durable adhesion to the feldspathic ceramic surface [24, 25]. In the previous in vitro study [12], ceramic access-hole specimens filled without ceramic pre-treatment showed no bond strength regardless of the use of the bonding agent. For this reason, in this in vivo study, the CP was used for groups CR and M4M.
Ceramic surfaces can be modified by silicate blasting or acid etching procedures to achieve a reliable adhesion [26, 27]. Hydrofluoric acid treatment has also been recommended but demands considerable precautions [28]. Clinically, decontamination by ultrasonic device during these procedures cannot be done easily [29]. It is also important to reduce clinical steps for access-hole filling.
Serial posts:
- Background : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study
- Methods : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study [1]
- Methods : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study [2]
- Methods : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study [3]
- Results : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study
- Discussion : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study [1]
- Discussion : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study [2]
- Discussion : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study [3]
- Discussion : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study [4]
- Conclusions : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study
- References : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study [1]
- References : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study [2]
- References : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study [3]
- References : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study [4]
- Acknowledgements : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study
- Author information : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study
- Rights and permissions : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study
- About this article : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study
- Table 1 ᅟ : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study
- Table 2 Aesthetical Outcomes at T = 12 M (VAS Score) : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study
- Table 3 Surface areas changes of access-hole filling. Unit: % : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study
- Table 4 Disappearance of the overfilling. Unit: % : Comparison of access-hole filling materials for screw retained implant prostheses: 12-month in vivo study
- Fig. 1. Brush-dip technique : Comparison of access-hole filling materials for screw retained implant
- Fig. 2. Occlusal contact point : Comparison of access-hole filling materials for screw retained implant
- 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) : Comparison of access-hole filling materials for screw retained implant
- Fig. 4. Margin depth measurement localization (example: TRA, T = 12 M) : Comparison of access-hole filling materials for screw retained implant
- Fig. 5. Depth and angle at the margin : Comparison of access-hole filling materials for screw retained implant
- Fig. 6. Access-hole filling surface areas measurement, average : Comparison of access-hole filling materials for screw retained implant
- 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 : Comparison of access-hole filling materials for screw retained implant