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Debora E Calabro,1 Alberto N Kojima,2 Vanessa Gallego Arias Pecorari,3 Cintia Helena Coury Saraceni,3 Markus B Blatz,4 Mutlu Özcan,5 Alfredo Mikail Melo Mesquita1 1Department of Prosthodontics, Paulista University (UNIP) São Paulo, São Paulo, Brazil; 2Department of Dental Materials and Prosthodontics, Paulista State University (UNESP) São José, São Paulo, Brazil; 3Department of Dental Materials, Paulista University (UNIP), São Paulo, Brazil; 4Unit Center for Dental and Oral Medicine Clinic for Fixed and Removable Prosthodontics and Dental Material Science, University of Zurich, Zurich, Switzerland; 5Professor, Department of Preventive and Restorative Sciencie, University of Pennsylvania, Philadelphia, PA, USACorrespondence: Debora E CalabroDepartment of Prosthodontics, Paulista University, Rua Diogo Jacome, 50 - Moema, São Paulo CEP 04512-000, BrazilEmail deboracalabro@doctor.comPurpose: To evaluate the survival rate in restored teeth with three different types of retainers prior to the fixing of crowns with zirconia through this retrospective clinical study. It is unclear how the type of post and core rehabilitation, and type of resin cement affect the longevity of teeth restored with crowns.Methods: In a private clinic, a total of 101 retainers installed by the same professional between June 2008 and January 2018, with an average time of 58.2 months (4.8 years), were analyzed regarding the following factors: survival, cement and failure type. Three types of retainers were used according to the indications found in the literature: filling with Z250 light-cured composite resin, 22 elements; fiberglass post with Z250 light-cured composite resin, 45 elements; and cast metallic core in silver-tin alloy, 34 elements. The retainers were cemented with chemically cured cement, U100, U200, or Panavia F.Results: Data were subjected to Kaplan-Meier analysis (p=0.495). Although the study presented several limitations, no significant differences were observed in the success rates between the types of intra-radicular retainers and the type of cement. The success rates were as follows: metal core, 97.1%; fiberglass post, 95.6%; and filling, 100%. On average, failures occurred at 48.4 months.Conclusion: In view of the results, it is possible to conclude that the different retainers evaluated have similar survival rates.Keywords: fiberpost, type of retainer, cast metallic core, filling core, survival rate

Calabro DE, Kojima AN, Gallego Arias Pecorari V, et al. Clin Cosmet Invest Dent. 2019;11: 409–417. The authors of this paper have advised that the affiliations are incorrect. The correct author list and affiliations are as follows: Debora E Calabro,1 Alberto N Kojima,2 Vanessa Gallego Arias Pecorari,3 Cintia Helena Coury Saraceni,3 Markus B Blatz,4 Mutlu Özcan,5 Alfredo Mikail Melo Mesquita1 1Department of Prosthodontics, Paulista University (UNIP) São Paulo, São Paulo, Brazil; 2Department of Dental Materials and Prosthodontics, Paulista State University (UNESP) São José, São Paulo, Brazil; 3Department of Dental Materials, Paulista University (UNIP), São Paulo, Brazil; 4Department of Preventive and Restorative Sciences, University of Pennsylvania,Philadelphia, PA, USA; 5Division of Dental Materials, Clinic for Reconstructive Dentistry, University of Zurich, Zurich, Switzerland Read the original article

Statement of the Problem: With Institutional Review Board approval, 39 patients who needed restoration of noncarious cervical lesions (NCCLs) were enrolled in this study. A total of 125 NCCLs were selected and randomly assigned to four groups: 1) a three-step etch-andrinse adhesive, Adper Scotchbond Multi-Purpose (MP, 3M ESPE, St Paul, MN, USA): 2) a two-step etch-and-rinse adhesive, Adper Single Bond Plus (SB, 3M ESPE); 3) a two-step selfetch adhesive, Adper Scotchbond SE (SE, 3M ESPE); and 4) a one-step self-etch adhesive, Adper Easy Bond (EB, 3M ESPE). A nanofilled composite resin was used for all restorations. Restorations were evaluated at six months and 18 months using modified U.S. Public Health Service (USPHS) parameters. Results: At six months after initial placement, 107 restorations (85.6% recall rate) were evaluated. At 18 months, 94 restorations (75.2% recall rate) were available for evaluation. The 6 mo/18 mo overall retention rates (%) were 100/90.9 for MP; 100/91.7 for SB; 100/90.9 for SE; and 96.4/92.3 for EB with no statistical difference between any pair of groups at each recall. Sensitivity to air decreased significantly for all adhesives from the preoperative to the postop erative stage and was stable thereafter. Interfacial staining did not change statistically from baseline to six months; however, interfacial staining at the enamel margins was statistically worse at 18 months than at baseline for the two self-etch adhesives EB and SE. Marginal adaptation was statistically worse at 18 months compared with baseline only for EB. This tendency was already significant at the six-month recall. Conclusion: Although 18-month retention was similar for the different adhesion strategies, enamel marginal deficiencies were more prevalent for the self-etch adhesives. [ABSTRACT FROM AUTHOR]

Statement of the Problem: The ceramic composition and surface microstructure of all-ceramic restorations are important components of an effective bonding substrate. Hydrofluoric acid and sandblasting are well-known procedures for surface treatment; however, surface treatment for high alumina-containing and lithium disilicate ceramics have not been fully investigated. Purpose: This in vitro study evaluated the tensile bond strength of resin cement to two types of ceramic systems with different surface treatments. Methods and Materials: Thirty specimens of each ceramic system were made according to the manufacturer's instructions and embedded in polyester resin. Specimens of In-Ceram Alumina [I] and IPS Empress 2 [E] were distributed to three groups with differing surface treatments (n=10): sandblasting with 50 µm aluminum oxide (APA); sandblasting with 110 µm aluminum oxide modified with silica particles (ROCATEC System-RS); a combination of sandblasting with APA and 10% hydrofluoric acid etching (HA) for two minutes on In-Ceram and for 20 seconds for IPS Empress 2. After the respective surface treatments, all the specimens were silanated, and Rely-X resin cement was injected onto the ceramic surface and light polymerized. The specimens were stored hi distilled water at 37°C for 24 hours and thermally cycled 1,100 times (5°C/55°C). The tensile bond strength test was performed in a universal testing machine at a 0.5 mm/minute crosshead speed. Results: The mean bond strength values (MPa) for IPS Empress 2 were 12.01 ± 5.93 (EAPA), 10.34 ± 1.77 (ERS) and 14.49 ± 3.04 (EHA). The mean bond strength values for In-Ceram Alumina were 9.87 ± 2.40 (IAPA) and 20.40 ± 6.27 (IRS). All In-Ceram specimens treated with 10% hydrofluoric acid failed during thermal cycling. Conclusion: The Rocatec system was the most effective surface treatment for In-Ceram Alumina ceramics; whereas, the combination of aluminum oxide sandblasting and hydrofluoric acid etching for 20 seconds worked more effectively for Empress 2 ceramics. [ABSTRACT FROM AUTHOR]

Abstract: The purpose of this prospective study was to find psychological risk factors predicting acute, chronic, and psychological rejection in patients undergoing liver transplantation using Cognitive Behavioural Assessment (CBA-2.0). The primary scale included an assessment of fears, personality, obsessive-compulsive symptoms, state and trait anxiety, psychological reactions, and depression. We prospectively recruited 44 patients undergoing orthotopic liver transplantation (OLT). Exclusion criteria were: education level below secondary school, unstable clinical situation in an out-patient setting, fulminant hepatitis, psychotic disorders, neurocognitive deficits, dementia, serious mental retardation, current alcohol or drug abuse, recent ideation of or attempted suicide, and non-adherence to therapy. CBA-2.0 primary scale series of questionnaires were handed out to patients immediately after the medical examination, which had been performed to ascertain eligibility for OLT. Rejection (acute and/or chronic) was diagnosed according to clinical and histopathological criteria. Psychological rejection was diagnosed when patients declared, after transplantation, a refusal of the new organ which caused psychiatric symptoms requiring medical treatment and/or psychotherapy. Analysis of variance and logistic regression of psychological variables was performed to detect possible risk factors for each type of rejection. A greater fear of repulsive animals was able a predictor for an acute rejection episode (odds ratio = 1.1; P < .05). No other psychological pretransplant predictor was noted for chronic or psychological rejection. In patients undergoing OLT, preoperative emotions of fear could predict an acute graft rejection episode. These findings imply that pre-OLT screening should include psychological factors in addition to traditional medical criteria with intervention in selected cases. [Copyright &y& Elsevier]

Abstract: Background: The aim of this study was to investigate whether pretransplant psychological variables included in the CBA 2.0 Primary Scale—fear, personality, obsessive-compulsive symptoms, state and trait anxiety, psychological reactions, and depression—could predict graft rejection among patients undergoing kidney transplantation. Methods: After ethical committee approval we enrolled 33 consecutive adult patients undergoing kidney transplantation. The inclusion criteria were a stable clinical situation in an out-of-hospital setting; Italian language literacy; a minimum of secondary school-level education, and written informed consent. We excluded patients with a psychotic disturbance, neurocognitive deficit, dementia, serious mental delay (IQ <50), current alcohol or drug abuse, recent ideation or attempted suicide or nonadherence to the therapeutic protocol. Acute and/or chronic graft rejection was diagnosed according to clinical and histopathologic criteria. CBA-2,0 “Primary Scale” series of questionnaires were handed out to patients at the time of the examinations to discrem eligibility for transplantation. Analyses of variance were performed to compare psychological scores among patients with versus without graft rejection. Logistic regression analyses of psychological variables were performed to detect possible predictors for graft rejection. The results of the analysis showed that higher psychoticism scores were able to predict graft rejection (P < .05). Results: The findings of this study suggest that it is mandatory to preoperatively plan an holistic treatment including psychological intervention mainly focused on psychoticism. [Copyright &y& Elsevier]