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Open research questions in Bone and Dental Protein Studies

213 gap statements mined from Bone and Dental Protein Studies papers in our 7.9M-paper local library, which holds 1,312 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • Need for strategic planning in indirect restorations considering growth and development of the dentition. Difficulty in managing rare dental disorders due to their complex and variable nature.

    The German S3-level guideline for the diagnosis and management of rare dental disorders · 2026 · DOI

  • Lack of evidence-based guidelines for the dental management of individuals affected by rare dental disorders. Need for interdisciplinary collaboration and consensus-based recommendations.

    The German S3-level guideline for the diagnosis and management of rare dental disorders · 2026 · DOI

  • The currently available evidence regarding treatment approaches for patients with AI is limited. There is only one split-mouth study published on long-term outcomes of full-crown restorations in patients with AI using different crown materials.

    Full Mouth Rehabilitation with All-Ceramic Restorations in a Patient with Amelogenesis Imperfecta: A Case Report with 10-Year Follow-Up · 2025 · DOI

  • The molecular mechanisms underlying dentinogenesis and the role of Notum in this process are not well understood. The relationship between Notum and Wnt/β-catenin signaling in dentinogenesis is not clearly established.

    Notum as a Crucial Regulator of Matrix Integrity in Dentinogenesis · 2025 · DOI

  • Within the limitations of this study, it can be concluded that: Selective caries removal and clean enamel margins restored with SMART restorations, combined with professional preventive measures every 3 months maintained the integrity of restorations in permanent molars with severe and moderate MIH for up to 1 year.

    Effectiveness of silver diamine fluoride in managing hypersensitivity of molar-incisor hypomineralization affected molars: a scoping review · 2026 · DOI

  • This has important functional implications for vectorial Ca2+ transport in ameloblast cells, and thus enamel formation, and warrants further investigation.

    Functional model for amelogenesis: polarization and pH sensitivity of calcium uptake in ameloblast-derived HAT-7 cells · 2026 · DOI

  • Further studies are needed to understand the role of Notch signaling in tooth development and regeneration. The use of iPSC-derived ameloblasts and a designed soluble Notch agonist may provide a new approach for tooth regeneration. The identification of DLX3 as a key gene in ameloblast maturation may lead to new therapeutic targets.

    Soluble Notch agonist enables human ameloblast maturation and enamel-like tissue formation for tooth regeneration · 2026 · DOI

  • The lack of understanding of the critical signaling pathways involved in the crosstalk between odontoblasts and ameloblasts during AM maturation. The need for a tractable system to identify GWAS-nominated variants with functional effects in ameloblasts.

    Soluble Notch agonist enables human ameloblast maturation and enamel-like tissue formation for tooth regeneration · 2026 · DOI

  • Further studies are needed to elucidate the mechanisms of MARCH2-mediated inhibition of odontoblast differentiation. The role of other MARCH family members in odontoblast differentiation should be investigated. The therapeutic potential of targeting MARCH2 or PTPRD for dentin-related diseases should be explored.

    MARCH2 suppresses odontoblast differentiation by polyubiquitinating PTPRD · 2026 · DOI

  • The regulation of odontoblast differentiation is not well understood. The role of MARCH2 in odontoblast differentiation is unknown. The substrate of MARCH2 involved in odontoblast differentiation is not identified.

    MARCH2 suppresses odontoblast differentiation by polyubiquitinating PTPRD · 2026 · DOI

  • Further studies are needed to fully elucidate the molecular mechanisms governing odontoblast differentiation. The development of new treatments for dental diseases and injuries based on the study's findings is a potential future research direction. Investigation of the therapeutic potential of the NKD1-MSX1 signaling axis in dental regenerative medicine is a potential future research direction.

    Wnt3a promotes in situ dentin formation through NKD1-MSX1 axis-mediated odontogenic differentiation of dental pulp stem cells · 2026 · DOI

  • The molecular mechanisms governing odontoblast differentiation remain poorly understood. Prior work has not identified a specific subpopulation of stem cells with a stronger potential for dentin regeneration. The study addresses this gap by identifying a Wnt3a-inducible NKD1 + odontoblastic subpopulation with potent dentinogenic activity.

    Wnt3a promotes in situ dentin formation through NKD1-MSX1 axis-mediated odontogenic differentiation of dental pulp stem cells · 2026 · DOI

  • The mechanisms behind the formation of the enamel decussation pattern have not been experimentally proven. The developmental processes leading to the acquisition of the enamel decussation pattern remain unresolved.

    Enamel decussation pattern originates from directional sliding of ameloblasts · 2026 · DOI

  • Gli transcription factors (TFs) are established as primary effectors of HH signaling, yet their distinct roles and regulatory mechanisms in governing cell commitment and differentiation of postmigratory CNCCs remain poorly understood.

    Gli2 and Gli3 synergistically mediate HH-TGF-β crosstalk in mesenchymal progenitor cells to orchestrate tooth root morphogenesis · 2026 · DOI

  • Some findings are constrained by technical artifacts. Inconsistent experimental conditions and the limited translatability of rodent models to human oral biology are limitations.

    Research progress in heterogeneity of dental mesenchymal stem cells · 2026 · DOI

  • The precise drivers of tooth eruption remain unclear but may involve coordinated processes such as alveolar bone remodeling,30,31 periodontal ligament transformation,32 and proper matrix formation.

    Kdf1 missense mutation caused enamel defects by disrupting cell adhesion and Hippo-YAP signaling in dental epithelium · 2026 · DOI

  • The Shields classification system has limitations in predicting disease progression and guiding personalised rehabilitation.

    Beyond the diagnosis: Unraveling DSPP genotype-phenotype correlations in dentin dysplasia and dentinogenesis imperfecta · 2026 · DOI

  • Beyond statistical significance, the increased release of TGF-β1 observed in the present study is biologically meaningful, although a definitive threshold for TGF-β1 concentration required for optimal regeneration remains unclear. Although enhanced release of TGF-β1 may support regenerative processes, a definitive threshold for the optimal concentration required for dentin–pulp regeneration remains unclear.

    Er:YAG Laser–activated simvastatin-loaded nanochitosan irrigant enhances TGF-β1 release from root dentin: an in-vitro study · 2026 · DOI

  • The need to balance pulp inflammation and repair. The challenge of developing therapeutic strategies that preserve host defense while promoting repair.

    Macrophages in dental pulp: dynamic regulators of microenvironmental homeostasis and therapeutic targets in pulpitis · 2026 · DOI

  • No blinding procedure was implemented for the participants or the statistician, - The operator could not be blinded to the treatment allocation, - Limited to a specific population of children…

    Clinical performance of glass hybrid and short fiber-reinforced composite restorations in MIH-affected molars: A 60-month split-mouth randomized controlled trial · 2026 · DOI

  • Further studies on the long-term effects of different restorative materials, - Investigations into the underlying causes of MIH, - Research on the optimal treatment protocols for MIH-affected…

    Clinical performance of glass hybrid and short fiber-reinforced composite restorations in MIH-affected molars: A 60-month split-mouth randomized controlled trial · 2026 · DOI

  • Investigating the role of Notum in other tissues and diseases, - Elucidating the molecular mechanisms of Notum in dentinogenesis, - Exploring the potential of Notum as a therapeutic…

    Notum as a Crucial Regulator of Matrix Integrity in Dentinogenesis · 2025 · DOI

  • Further study of the role of Ser16 phosphorylation and C-terminal truncation in controlling amelogenin self-assembly. Investigation of the mechanical properties of nanoribbons. Development of new materials with unique mechanical properties based on the structure of nanoribbons.

    Serine-16 Phosphorylation, C-Terminal Truncation, and Ion-Specific Interactions Coordinate Amelogenin Nanoribbon Formation · 2026 · DOI

  • Continued research on the long-term behavior of 3D-printed materials. Investigation of the cost-effectiveness and accessibility of digital workflows. Evaluation of the impact of digital dentistry on dental education.

    The emerging role of digital dentistry in managing molar-incisor hypomineralization: A perspective · 2026 · DOI

  • Investigating the pharmacological significance of Spinosaurus tooth fossils in relation to oxidative stress modulation and cancer cell behavior. Developing new therapeutic strategies for cancer treatment based on the study of fossil biominerals. Exploring the potential of biomimetic design inspired by the unique mineral composition and structure of Spinosaurus tooth fossils.

    Pharmacotherapeutic Potentials of Spinosaurus Tooth Fossils: Discovering the Ancient Healer · 2026 · DOI

Most-cited papers in Bone and Dental Protein Studies

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Open questions raised by papers listed on this page include: (1) Lack of evidence-based guidelines for the dental management of individuals affected by rare dental disorders (“The German S3-level guideline for the diagnosis and management of rare dental…”, 2026); (2) Further studies are needed to understand the role of Notch signaling in tooth development and regeneration (“Soluble Notch agonist enables human ameloblast maturation and enamel-like…”, 2026); (3) Further studies are needed to elucidate the mechanisms of MARCH2-mediated inhibition of odontoblast differentiation (“MARCH2 suppresses odontoblast differentiation by polyubiquitinating PTPRD”, 2026); (4) Further studies are needed to fully elucidate the molecular mechanisms governing odontoblast differentiation (“Wnt3a promotes in situ dentin formation through NKD1-MSX1 axis-mediated…”, 2026); (5) The developmental processes leading to the acquisition of the enamel decussation pattern remain unresolved (“Enamel decussation pattern originates from directional sliding of ameloblasts”, 2026). 213 gap statements have been mined from Bone and Dental Protein Studies papers in our 7.9M-paper local library, which holds 1,312 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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