Nakhaei Mohammadreza, Dashti Hosein, Sasannejad Sepideh, Mohammadipour Hamideh Sadat
Dental Materials Research Center, Department of Prosthodontics, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran.
Department of Prosthodontics, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran.
Int J Dent. 2025 Apr 8;2025:9702318. doi: 10.1155/ijod/9702318. eCollection 2025.
Dislodgement of attachment matrix housing (AMH) from acrylic resin base is considered a major problem in overdentures. It is necessary to achieve a strong and durable bond between AMH and the acrylic part. The application of primers, adhesives, and resin materials containing multifunctional monomers may improve their adhesion. The purpose of this in vitro study was to evaluate, the effects of bonding protocols on shear bond strength (SBS) of resin materials to Ti and denture acrylic base. Sixty poly methyl methacrylate (PMMA) blocks (15 × 15 × 15 mm) and 60 AMH were prepared and divided into six groups ( = 10). The acrylic resin specimens were bonded using one of the following adhesive strategies: (P) flowable resin composite, (A-SR-P) air abrasion + SR Connect primer + flowable resin composite, (A-SR-Q) air abrasion + SR connect primer + Quick up, (A-SR-MHA) air abrasion + SR Connect primer + autopolymerizing luting composite, (Q) Quick up and (T) autopolymerizing acrylic resin. The surfaces of the Ti housing were bonded using one of these protocols: (GP-P): G-Premio BOND + light-cured resin composite, (AP-GP-P) ALLOY PRIMER + G-Premio BOND + resin composite, (Q) Quick Up, (AP-Q) ALLOY PRIMER + Quick Up, (MP-MHA) Monobond Plus primer + Multilink Hybrid Abutment, and (T) autopolymerizing acrylic resin. After thermal cycling (5000 cycles), the SBS was evaluated and the failure modes were recorded. Data (MPa) were analyzed using Shapiro-Wilk, one-way ANOVA, the post hoc Tukey HSD, and Games-Howell tests ( = 0.05). In the acrylic resin groups, the greatest SBS values were reported in Q (11.97 ± 2.65 MPa), T (15.11 ± 5.36 MPa), and A-SR-P (8.32 ± 4.51 MPa) groups with no significant differences among them ( > 0.05). The SBS of A-SR-MHA and P groups was significantly lower than other study groups. In AMH, the SBS of GP-P (9.36 ± 1.57 MPa), AP-GP-P (7.66 ± 3.35 MPa), and MP-MHA (6.37 ± 2.39 MPa) were noticeably higher than other groups. There was no significant difference in adhesion to Ti between GP-P and AP-GP-P (=0.63), as well as Q and AP-Q (=0.65). For improving the adhesion of AMH to acrylic resin of overdentures, the application of G-Premio BOND with or without ALLOY PRIMER in Ti substrate and Quick Up and autopolymerizing acrylic resin to the acrylic resin of denture base produced the best adhesion. ALLOY PRIMER could not increase the adhesion to Ti substrate.
附着基质托槽（AMH）与丙烯酸树脂基托分离被认为是覆盖义齿的一个主要问题。在AMH和丙烯酸部件之间实现牢固且持久的粘结是很有必要的。使用含有多功能单体的底漆、粘合剂和树脂材料可能会改善它们之间的粘结力。这项体外研究的目的是评估粘结方案对树脂材料与钛及义齿丙烯酸基托之间剪切粘结强度（SBS）的影响。制备了60个聚甲基丙烯酸甲酯（PMMA）块（15×15×15毫米）和60个AMH，并将其分为六组（每组 = 10）。使用以下粘结策略之一对丙烯酸树脂标本进行粘结：（P）流动树脂复合材料，（A - SR - P）空气研磨 + SR Connect底漆 + 流动树脂复合材料，（A - SR - Q）空气研磨 + SR connect底漆 + Quick up，（A - SR - MHA）空气研磨 + SR Connect底漆 + 自凝粘结复合材料，（Q）Quick up，以及（T）自凝丙烯酸树脂。使用以下方案之一对钛托槽表面进行粘结：（GP - P）：G - Premio BOND + 光固化树脂复合材料，（AP - GP - P）合金底漆 + G - Premio BOND + 树脂复合材料，（Q）Quick Up，（AP - Q）合金底漆 + Quick Up，（MP - MHA）Monobond Plus底漆 + Multilink Hybrid基台，以及（T）自凝丙烯酸树脂。在热循环（5000次循环）后，评估SBS并记录失效模式。使用Shapiro - Wilk检验、单因素方差分析、事后Tukey HSD检验和Games - Howell检验（α = 0.05）对数据（MPa）进行分析。在丙烯酸树脂组中，Q组（11.97±2.65 MPa）、T组（15.11±5.36 MPa）和A - SR - P组（8.32±4.51 MPa）的SBS值最高，它们之间无显著差异（P > 0.05）。A - SR - MHA组和P组的SBS显著低于其他研究组。在AMH中，GP - P组（9.36±1.57 MPa）、AP - GP - P组（7.66±3.35 MPa）和MP - MHA组（6.37±2.39 MPa）的SBS明显高于其他组。GP - P组和AP - GP - P组之间对钛的粘结力无显著差异（P = 0.63），Q组和AP - Q组之间也无显著差异（P = 0.65）。为了提高AMH与覆盖义齿丙烯酸树脂的粘结力，在钛基底中使用有或没有合金底漆的G - Premio BOND，以及在义齿基托丙烯酸树脂上使用Quick Up和自凝丙烯酸树脂可产生最佳粘结力。合金底漆不能增加对钛基底的粘结力。
