Purpose: The efficacy of etch-and-rinse, selective enamel-etching, and self-etching protocols for universal adhesives in follow-ups of over 12 months was compared in a network meta-analysis.
Study selection: Randomized controlled trials (RCTs) published from 1998 to 2022 that compared marginal staining, marginal adaptation, retention and fractures, post-operative sensitivity, or recurrence of caries that took place over 12-months post-restoration were selected. A network meta-analysis determined the performance of each adhesive protocol.
Results: After screening 981 articles, 16 RCTs were subjected to data extraction. Of which, 674 patients with 2816 restorations, were included in the network meta-analysis. The pooled risk of marginal discoloration following self-etching was significantly higher than that following etch-and-rinse at over 12, 24, and 36 months, which was time-dependent. The pooled risks of unfavorable marginal adaptation and unfavorable retention and fractures following self-etching were also significantly higher than that following etch-and-rinse, with the rates of unfavorable retention and fractures in non-carious cervical lesions increasing in a time-dependent manner. The pooled risks of marginal discoloration, unfavorable marginal adaptation, retention and fractures were similar between etch-and-rinse and selective enamel-etching protocols. Post-operative hypersensitivity and recurrence of caries were not significantly different among etch-and-rinse, selective enamel-etching, and self-etching protocols.
Conclusions: In follow-ups over 12 months, esthetic and functional outcomes of restorations completed with an etch-and-rinse adhesive protocol were superior to the ones achieved with a self-etching strategy without selective enamel-etching. Selective enamel etching is recommended for self-etching systems. Biological responses were similar for all three adhesive strategies.
The Journal of Prosthodontic Research has published important papers regarding the adhesive dentistry.The findings of this systematic review and network meta-analysis support the use of SELECTIVE ENAMEL-ETCHING procedure for its consequent stable, functional, and esthetic performance that persisted over at least 12 months.We believe that the clinical relevance would be of considerable interest to our readership.
Purpose: Various oral rehabilitation approaches are available for severely worn dentition. However, evidence-based guidelines for permanent treatment are limited. This review aims to investigate clinical observational findings and compare in-vitro outcomes of thin and ultrathin occlusal veneers using different materials and approaches.
Methods: An electronic search of online databases, such as PubMed (MEDLINE), BioMed Central (BMC), Cochrane, and Scopus, was performed for the 2009 - Jun 2021 period, following the PRISMA 2020 criteria. The reports sought for retrieval were all the articles evaluating the clinical outcomes of permanent full-mouth rehabilitation, and all in-vitro records that investigated and compared fracture strength, survival rate, and modes of failure of ultrathin (0.3 - 0.6 mm), thin (0.5 - 0.8 mm), and thick (0.8-1.5 mm) occlusal veneer restorations, with regard to the available indirect restorative materials. The Newcastle Ottawa risk of bias criteria was used to judge the clinical studies and a modified consort statement was used for the evaluation of in-vitro studies. The data of the included studies were extracted and grouped based on the similarity of the outcomes and study protocols. Data heterogeneity determined the qualitative and quantitative grouping of the results.
Results: Two clinical and 17 in-vitro studies were included. Data exhibited heterogeneity within the materials, variables, testing protocols and observation periods. Therefore, only qualitative synthesis of the results was feasible. Clinically used 1 mm lithium disilicate overlays and ultrathin one-step no-prep polymer infiltrated ceramic network (PICN) occlusal veneers exhibited very high success and survival rates. The analysis of in-vitro studies exhibited variable survival rates and fracture load values, based on materials, thickness, and restorative approaches used.
Conclusion: Within the limitations of this systematic review, it can be concluded that the clinical outcomes of thin and ultrathin occlusal veneers/overlays are auspicious. In-vitro experimental results support the usage of the thin and ultrathin occlusal veneers.
Bonded ceramics restorations, such as occlusal veneers, have been established by appropriate bonding procedure and material science. This article reviewed the clinical observational findings and compared the in vitro outcomes of thin and ultrathin occlusal veneers using different materials and approaches. The results showed that the 1 mm lithium disilicate overlays and ultrathin one-step no-prep Vita Enamic occlusal veneers exhibited very high success and survival rates. It can be concluded that the clinical outcomes of thin and ultra-thin occlusal veneers/overlays are auspicious. This review article supports the advantage of the thin and ultrathin occlusal veneers.
Purpose: There is no clinical consensus to determine the right balance between underpreparation and marginal bone level changes. The purpose of this systematic review and meta-regression was to investigate the influence of the type of drilling preparation of the implant site in relation to the bone mineral density on the clinical success, expressed in terms of the MBL and implant failure rate.
Study Selection: A thorough search was performed using the digital databases MEDLINE PubMed, EMBASE, and Cochrane Central Register of Controlled Trials by entering research lines or various combinations of free words. The main keywords used were “dental implants”, “bone density”, and “torque”.
Results: The mean bone resorption in the conventional preparation group was -0.43 (± 0.28) mm, whereas it was -0.80 (± 0.37) mm in the underprepared group. For the D1/D2/D3 bone group, the slope was significantly different from zero and linearity; the D4 bone group slope was not significantly different from zero and was almost parallel, although it was significantly different from linearity. The box and whiskers plot shows that the MBL in underprepared sites tended to be significantly higher with a higher variation than that in conventionally prepared sites.
Conclusion: Within its limits, our meta-regression analysis showed that MBL is influenced by the type of drilling preparation and bone mineral density. In particular, a lower MBL was observed in the D1 bone with conventional preparation than with underpreparation. Moreover, a greater implant-to-osteotomy site mismatch was positively associated with greater MBLs in the bone densities of D1/D2/D3.
A surgical protocol called under-preparation or undersized drilling is commonly used to obtain increased primary stability in low-density bones. However, there is no clinical consensus to determine the right balance between the under-preparation and marginal bone level (MBL )changes. This systematic review summarizes the influence of the type of drilling preparation of the implant site, in relation to bone mineral density, on clinical success, as expressed by the MBL and implant failure rate. This review article is recommended for clinicians to understand the osteotomy preparation protocols in implant treatment.
Purpose: Evidence regarding the performance of digital dentures (DDs) fabricated using 3D printing is insufficient. This study aimed to evaluate patient satisfaction with conventional dentures (CDs) and DDs fabricated using 3D printing.
Methods: This randomized controlled trial was conducted between November 2017 and May 2020. In the CD-DD group, CDs were fabricated before DDs, while the protocol was reversed in the DD-CD group. The primary outcome was patient satisfaction, quantified using a 100-mm visual analog scale, which assessed chewing efficiency, pain, stability, retention, comfort, esthetics, ease of cleaning, phonetics, and general satisfaction. Secondary outcomes were quality of life (QOL), number of visits, time required for definitive denture fabrication, number of adjustment appointments, and time required for denture stabilization after denture delivery.
Results: Patient satisfaction with CDs was superior in terms of phonetics, ease of cleaning, stability, comfort, and general satisfaction. Secondary outcomes such as social disability and the number of clinic visits were significantly lower in patients with DDs. However, the two groups showed no significant differences in the other outcomes. Although patient satisfaction with DDs was inferior to that with CDs, 20% of patients preferred and used DDs (12 patients preferred CDs, and three patients opted for DDs).
Conclusion: Although patient satisfaction or QOL with DDs may be somewhat inferior to that with CDs, 20% of patients preferred and used DDs daily. Thus, DDs fabricated using 3D printing may have comparable practicality and efficacy to CDs.
Recently, digital dentistry has been used not only in fixed-prosthodontics but also in removable dentures in Japan. However, the clinical evidence for the efficacy of treatment of complete dentures manufactured using digital technology is lacking. This randomized controlled cross-over trial investigated patient satisfaction, oral health-related quality of life, patient preference, number of visits, and treatment time with complete dentures using 3D printing. The findings of this study indicated that patient outcomes were slightly inferior to those where conventional treatment methods were used for complete dentures. However, the number of patient visits required for digital denture treatment was less than for conventional complete denture treatment. This suggests that the digital complete denture treatment is superior. This paper is recommended for JPR readers who wish to understand the clinical advantages and limitations of 3D-printed complete dentures.
Purpose: To investigate the effect of masseter muscle activity during wakefulness and sleep on tooth wear.
Methods: Sixteen participants with no or mild tooth wear (NMTW group) and sixteen participants with moderate-to-severe tooth wear (MSTW group) were enrolled. The severity of tooth wear was evaluated using the occlusal and incisal indices of the tooth wear index. Surface electromyography was performed to record the electrical activity of the left masseter muscle during wakefulness and sleep. Electromyographic activity was detected using an electromyographic threshold of 5% and 20% of maximal voluntary clenching (MVC). The total duration of electromyographic activity and bruxism episodes were calculated.
Results: The mean ages of the NMTW and MSTW groups were 71.75 ± 7.61 years and 71.69 ± 7.49 years, respectively. The mean cumulative duration of electromyographic activity during wakefulness using a threshold of >5% MVC was 6.44 ± 4.52 min/h and 13.62 ± 10.08 min/h for the NMTW and MSTW groups, respectively (p=0.048). The mean total durations of electromyographic activity during wakefulness and sleep using a threshold of >20% MVC were 1.08 ± 1.70 min/h and 1.05 ± 3.02 min/h, respectively, in the NMTW group and 4.78 ± 6.37 min/h and 1.61 ± 1.79 min/h, respectively, in the MSTW group (p=0.048 and p=0.003, respectively).
Conclusion: These results suggest that masseter electromyographic activity during wakefulness and sleep may be related to the severity of tooth wear.
Although tooth wear is caused by attrition, erosion, and abrasion, the relationship between bruxism (awake and/or asleep) and tooth wear remains unknown. This study aimed to assess masseter electromyographic activity during wakefulness and sleep in individuals with moderate or severe tooth wear. The results of this case-control study showed an association between higher masseter electromyographic activity during wakefulness and sleep and increased the severity of tooth wear. The authors suggest that assessing masticatory electromyographic activity during wakefulness and sleep could be an important predictor of tooth wear progression.
A systematic review of digital removable partial dentures. Part II: CAD/CAM framework, artificial teeth, and denture base
Released on J-STAGE: January 11, 2022 | Volume 66 Issue 1 Pages 53-67
Atsushi Takaichi, Kenji Fueki, Natsuko Murakami, Takeshi Ueno, Yuka Inamochi, Junichiro Wada, Yuki Arai, Noriyuki Wakabayashi
Views: 212
Effectiveness of the socket shield technique in dental implant: A systematic review
Released on J-STAGE: January 11, 2022 | Volume 66 Issue 1 Pages 12-18
Toru Ogawa, Ratri M. Sitalaksmi, Makiko Miyashita, Kenji Maekawa, Masahiro Ryu, Aya Kimura-Ono, Takeshi Suganuma, Takeshi Kikutani, Masanori Fujisawa, Katsushi Tamaki, Takuo Kuboki
Views: 193
A systematic review of digital removable partial dentures. Part I: Clinical evidence, digital impression, and maxillomandibular relationship record
Released on J-STAGE: January 11, 2022 | Volume 66 Issue 1 Pages 40-52
Kenji Fueki, Yuka Inamochi, Junichiro Wada, Yuki Arai, Atsushi Takaichi, Natsuko Murakami, Takeshi Ueno, Noriyuki Wakabayashi
Views: 182
Leadership and love: Part 1
Released on J-STAGE: January 06, 2023 | Volume 67 Issue 1 Pages x-xi
Sreenivas Koka
Views: 178
Clinical outcomes and influence of material parameters on the behavior and survival rate of thin and ultrathin occlusal veneers: A systematic review
Released on J-STAGE: January 06, 2023 | Volume 67 Issue 1 Pages 45-54
Mohamed Alghauli, Ahmed Yaseen Alqutaibi, Sebastian Wille, Matthias Kern
Views: 155