Journal of Prosthodontic Research
Online ISSN : 1883-9207
Print ISSN : 1883-1958
ISSN-L : 1883-1958
Featured articles
Displaying 1-20 of 26 articles
  • JPR_D_22_00301
    Effect of filler contents on the bond strength of CAD/CAM resin crowns: New resin primer versus conventional silane agents Read more
    Editor's pick

    A groundbreaking study has emerged with the potential to revolutionize dental treatments. The latest research has focused on the adhesive strength of resin composite crowns fabricated using CAD/CAM technology. This study compared the efficacy of a novel resin primer containing methyl methacrylate (MMA) with those of conventional silane agents. The results showed that treatment with MMA-containing primers improved the adhesion between the resin composite blocks and resin cement. In addition, the MMA-containing primer formed a 5-10 μm layer at the interface, exhibiting a distinct adhesion mechanism via silane treatment. These findings provide major insights into the development of novel bonding protocols for dental care. Expectations are high for future advancements in the theory of adhesion mechanisms.

  • JPR_D_23_00090
    Ceramic partial laminate veneers in anterior teeth: A literature review Read more
    Editor's pick

    This literature review explored small ceramic restorations adhesively luted onto unprepared anterior teeth, also known as partial laminate veneers, fabricated from traditional ceramic and/or resin composite. From an electronic search, laboratory studies have suggested promising mechanical and optical performances for partial laminate veneers, and clinical reports have highlighted the large variability in material selection and application protocols. Overall, the review suggests comparable performance to traditional veneers but also indicates low-quality evidence for ceramic partial laminate veneers, thus emphasizing the need for further clinical studies with extended follow-up periods to confirm their effectiveness.

  • JPR_D_23_00089
    Marginal adaptation and fracture resistance of milled and 3D-printed CAD/CAM hybrid dental crown materials with various occlusal thicknesses Read more
    Editor's pick

    This study evaluated the marginal fit and durability of three types of hybrid dental materials with varying occlusal thicknesses. The results showed superior marginal adaptation for 3D printed crowns, and all materials could withstand normal chewing force, even at a minimal thickness of 0.8 mm.

  • JPR_D_22_00252
    Implant-assisted removable partial dentures: Part I. a scoping review of clinical applications Read more
    Editor's pick

    The authors performed a scoping review to determine the current scientific status of implant-assisted removable partial dentures (IARPDs) by focusing on the length and diameter of dental implants, implant placement sites, loading protocols, IARPDs designs, selection of attachments, cost-effectiveness,  and biological/technical complications. Overall , the clinical outcomes were acceptable with several types of biological/technical complications.

  • JPR_D_23_00013
    Visualization of droplets and aerosols in simulated dental treatments to clarify the effectiveness of oral suction devices Read more
    Editor's pick

    Provided the risks of infection during a pandemic, the hazards of aerosols generated during dental treatments should be understood. This study established visualization methods, discovered conditions for droplets/aerosols generated in simulating dental treatments, and identified the conditions for effective suction methods. Consequently, these findings aid in appropriate protection from communicable diseases in dental-care environments.

  • JPR_D_22_00221
    Current status of optical scanning in facial prosthetics: A systematic review and meta-analysis Read more
    Editor's pick

    This study reviewed the current status of optical scanning in facial prosthetics by sorting multiple references. There was no significant difference in linear dimensions on human faces between direct caliper measurements and scanned models. The study results are significant basic information for the application of digital workflow in facial prosthetics, which may be further developed eventually.

  • JPR_D_22_00238
    Mechanism and clinical use of botulinum neurotoxin in head and facial region Read more
    Editor's pick

    This review aims to provide the dental fraternity with information on the mechanism of botulinum neurotoxin and its therapeutic applications currently prevailing in clinical practice. It is essential, especially for prosthodontic experts treating temporomandibular disorders, bruxism, chronic tooth pain, myofascial pain, etc., to know the pros and cons of botulinum neurotoxin.

  • JPR_D_22_00100
    Fabrication of milled removable partial dentures using a custom plate with prefabricated artificial teeth Read more
    Editor's pick

    The fabrication of removable partial dentures (RPDs) through fully digital procedures remains a challenge. In this study, the authors developed a novel CAD/CAM method for manufacturing a patient-specific RPD in a single piece, using a custom plate. This method, which does not use a gypsum model to combine RPD components, metal framework, denture base, and artificial denture teeth, offers an advantage in the efficiency and accuracy of RPD fabrication over conventional methods. The development of this fully digital RPDs fabrication approach presented in this report will significantly impact prosthodontic clinics worldwide, especially in the context of an increasing aging population.

  • JPR_D_22_00213
    Accuracy of optical interocclusal registration using an intraoral scanner Read more
    Editor's pick

    Interocclusal registration is an important procedure in the digital workflow. This article compares the accuracy of optical interocclusal registration using Trios 3 with different instructions, such as “bite normally,” “bite lightly,” and “bite strongly.” The authors concluded that the use of optical impression methods under a “strong bite force” condition may reduce deviation and allow for stable interocclusal registration. This method will help to obtain accurate prosthodontic treatment in digital dentistry.

  • JPR_D_22_00170
    Effect of partial ferrule on fracture resistance of endodontically treated teeth: A meta-analysis of in-vitro studies Read more
    Editor's pick

    There is a debate among clinicians regarding severe endodontically treated teeth (ETT) in terms of residual tooth substance—whether to extract the tooth or perform partial ferrule. This work conducts the first meta-analysis study that introduces clear evidence-based guidance for clinicians regarding partial ferrule so that they can take appropriate clinical decisions and adequately plan restorative dental treatments of ETT. 

  • JPR_D_22_00138
    Current surface modification strategies to improve the binding efficiency of emerging biomaterial polyetheretherketone (PEEK) with bone and soft tissue: A literature review Read more
    Editor's pick

    The widespread use of Polyetheretherketone (PEEK) as an oral implant material is an ongoing topic of investigation. This review article summarizes the current surface modification strategies used to improve the binding efficiency of the emerging biomaterial PEEK with bone and soft tissues. Although many studies have shown that various surface modifications can successfully improve the biological activity of PEEK, further in-vivo experiments and long-term clinical evaluations are required to investigate the effects of various surface modifications on the tissue integration ability of PEEK implants.

  • JPR_D_22_00034
    Radiographic predictive factors for 10-year survival of removable partial denture abutment teeth: Alveolar bone level and density Read more
    Editor's pick

    To predict the success of prosthodontic treatments and plan effective maintenance care strategies, it is essential to precisely evaluate the risk factors. This retrospective study reports the 5- and 10-year survival of the abutment teeth of removable partial dentures. In addition to the presence of root-canal treatment at the baseline, postoperative radiographic changes in crown-root ratio and alveolar bone density on the denture side were significantly associated with abutment tooth loss.

  • JPR_D_22_00054
    Effect of implant placement depth on bone remodeling on implant-supported single zirconia abutment crown: A 3D finite element study Read more
    Editor's pick

    In silico finite element analysis (FEA) has been widely used to evaluate stress/strain distribution in bone and implants under standardized conditions. The authors adopted a time-dependent FEA to evaluate the influence of subcrestal implant placement depth on bone remodeling. The time-dependent FEA demonstrated that an implant depth of more than 1.5 mm exhibited a high stress concentration and great overloading elements, particularly in cancellous bone. The established in silico approach will possibly become a useful tool to uncover the optimal implant placement depth that provides an appropriate bone response. 

  • JPR_D_21_00286
    An in vitro study on the selection of surfactants for removal of cream denture adhesives from dentures and their application to denture cleaners Read more
    Editor's pick

    Denture adhesives increase the retention and stability of removable prostheses; however, they are difficult to remove, leading to the accumulation of denture plaques/calculi containing oral bacteria. In this study, Harada et al. evaluated the different types of surfactants for removing cream-type denture adhesives by focusing on their hydrophilic-lipophilic balance (HLB). The data provided the optimal HLB range that efficiently removes denture adhesives without damaging denture materials.

  • JPR_D_21_00296
    Higher extracellular water/total body water ratio is associated with lower tongue and grip strength: a cross-sectional study Read more
    Editor's pick

    Extracellular water/total body water ratio (ECW/TBW) measured by bioelectrical impedance analysis is recognized as a useful parameter to detect malnutrition, frailty, or locomotive syndrome. This cross-sectional study reported that lower tongue strength (tongue pressure) was associated with a higher ECW/TBW among 171 Japanese community-dwelling adults with a median age of 70.0 years. The study team calls for the attention of oral health professionals about the possibility that the decreased tongue function among patients could be a sign of generalized muscle weakness or malnutrition.

  • JPR_D_21_00279
    Efficacy of Adhesive Strategies for Restorative Dentistry: A Systematic Review and Network Meta-analysis of Double-blind Randomized Controlled Trials Over 12 Months of Follow-up Read more
    Editor's pick

    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.

  • JPR_D_21_00270
    Clinical outcomes and influence of material parameters on the behavior and survival rate of thin and ultrathin occlusal veneers: A systematic review Read more
    Editor's pick

    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.

  • JPR_D_21_00275
    Clinical effects of conventional and underprepared drilling preparation of the implant site based on bone density: A systematic review and meta-regression Read more
    Editor's pick

    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.

  • JPR_D_21_00048
    Patient satisfaction with conventional dentures vs. digital dentures fabricated using 3D-printing: A randomized crossover trial Read more
    Editor's pick

    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.

  • JPR_D_21_00171
    Effect of masseter muscle activity during wakefulness and sleep on tooth wear Read more
    Editor's pick

    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.