
Professor
Preventive & Restorative Dental Sciences
+1 415 514-0818
Stefan Habelitz is a Materials Scientist and Chemist and Associate Professor at the Department of Preventive and Restorative Dental Sciences at the School of Dentistry at UCSF. His research focuses on understanding how matrix proteins control mineralization in enamel and dentin. Current approaches include:
- Remineralization of Dentin Caries Lesions: Anionic polymers, like Poly-Aspartic Acid, are used to induce intrafibrillar mineral within collagen fibrils. This project attempts to recover lost dental tissue function by a mineralization process, (see, Burwell et al. PLOS-One 2011).
- Mimicking Enamel Formation In-Vitro: Our recent studies in the lab have shown that amelogenin can self-assemble into ribbons which self-align and form an organic matrix mimicking the organization of apatite nanofibers in dental enamel. In this project we attempt to induce apatite crystallization on amelogenin templates to obtain materials similar to enamel (Martinez-Avila et al., Biomacromolecules 2012).
- Micropatterned Porous Membranes for Dental Tissue Synthesis: In this project we designed a variety of porous membranes that enable the precise positioning of cells thus facilitating cellular organization similar to odontoblasts at the pulpal wall. We study the potential of these membranes for in-vitro synthesis of dentin and enamel using dental stem cells, embryonic stem cell and iPS cells.
Interests: Tooth development, biomineralization, enamel matrix, amelogenin, collagen, dentin, enamel, apatite, odontoblasts, patterning, polymer membranes, tissue engineering, self-assembly.
Publications
Calcium phosphate nanoclusters modify periodontium remodeling and minimize orthodontic relapse.
Biomaterials
Calcium phosphate nanoclusters modify periodontium remodeling and minimize orthodontic relapse.
bioRxiv : the preprint server for biology
Poly(Aspartic Acid) Promotes Odontoblast-like Cell Differentiation in Rat Molars with Exposed Pulp.
Journal of functional biomaterials
Electromechanical Coupling in Collagen Measured under Increasing Relative Humidity.
Materials (Basel, Switzerland)
Biomimetic Mineral Synthesis by Nanopatterned Supramolecular-Block Copolymer Templates.
Nano letters
Corrigendum: Calcium interactions in amelogenin-derived peptide assembly.
Frontiers in physiology
Calcium interactions in amelogenin-derived peptide assembly.
Frontiers in physiology
Amyloid-like amelogenin nanoribbons template mineralization via a low-energy interface of ion binding sites.
Proceedings of the National Academy of Sciences of the United States of America
A Brief History of the Discovery of Amelogenin Nanoribbons In Vitro and In Vivo.
Journal of dental research
A N-terminus domain determines amelogenin's stability to guide the development of mouse enamel matrix.
Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research
Mechanisms of Enamel Mineralization Guided by Amelogenin Nanoribbons.
Journal of dental research
Polymer-Induced Liquid Precursor (PILP) remineralization of artificial and natural dentin carious lesions evaluated by nanoindentation and microcomputed tomography.
Journal of dentistry
Protein nanoribbons template enamel mineralization.
Proceedings of the National Academy of Sciences of the United States of America
Enhanced silver diamine fluoride therapy using the PILP method -A nanoindentation study.
Dental materials journal
Shear Bond Strength of Glass Ionomer Cement to Silver Diamine Fluoride-Treated Artificial Dentinal Caries.
Pediatric dentistry
Remineralization of demineralized dentin using a dual analog system.
Orthodontics & craniofacial research
Integrating the PILP-mineralization process into a restorative dental treatment.
Dental materials : official publication of the Academy of Dental Materials
Progression of Self-Assembly of Amelogenin Protein Supramolecular Structures in Simulated Enamel Fluid.
Biomacromolecules
Influence of fluoride on the mineralization of collagen via the polymer-induced liquid-precursor (PILP) process.
Dental materials : official publication of the Academy of Dental Materials
DENTAL ENAMEL FORMATION AND IMPLICATIONS FOR ORAL HEALTH AND DISEASE.
Physiological reviews
Recovery after PILP remineralization of dentin lesions created with two cariogenic acids.
Archives of oral biology
Piezoelectric Tensor of Collagen Fibrils Determined at the Nanoscale.
ACS biomaterials science & engineering
Amyloid-like ribbons of amelogenins in enamel mineralization.
Scientific reports
Repair of dentin defects from DSPP knockout mice by PILP mineralization.
Journal of materials research
Distinct decalcification process of dentin by different cariogenic organic acids: Kinetics, ultrastructure and mechanical properties.
Archives of oral biology
Materials engineering by ameloblasts.
Journal of dental research
Matching 4.7-Å XRD spacing in amelogenin nanoribbons and enamel matrix.
Journal of dental research
Piezoelectric properties of aligned collagen membranes.
Journal of biomedical materials research. Part B, Applied biomaterials
The proteolytic processing of amelogenin by enamel matrix metalloproteinase (MMP-20) is controlled by mineral ions.
Biochimica et biophysica acta
Self-assembly of filamentous amelogenin requires calcium and phosphate: from dimers via nanoribbons to fibrils.
Biomacromolecules
Visualizing molecular polar order in tissues via electromechanical coupling.
Journal of structural biology
Functional remineralization of dentin lesions using polymer-induced liquid-precursor process.
PloS one
Electromechanical properties of dried tendon and isoelectrically focused collagen hydrogels.
Acta biomaterialia
Biophysical characterization of synthetic amelogenin C-terminal peptides.
European journal of oral sciences
Self-assembly of amelogenin proteins at the water-oil interface.
European journal of oral sciences
Hydrolysis of amelogenin by matrix metalloprotease-20 accelerates mineralization in vitro.
Archives of oral biology
Biomimetic Precipitation of Uniaxially Grown Calcium Phosphate Crystals from Full-Length Human Amelogenin Sols.
Journal of bionic engineering
Altered self-assembly and apatite binding of amelogenin induced by N-terminal proline mutation.
Archives of oral biology
Mechanical recovery of dentin following remineralization in vitro--an indentation study.
Journal of biomechanics
Dynamic light scattering and zeta potential of colloidal mixtures of amelogenin and hydroxyapatite in calcium and phosphate rich ionic milieus.
Archives of oral biology
Amelogenin as a Promoter of Nucleation and Crystal Growth of Apatite.
Journal of crystal growth
Self-aligning amelogenin nanoribbons in oil-water system.
Journal of structural biology
Evaluation of surface structural and mechanical changes following remineralization of dentin.
Scanning
Crack arrest within teeth at the dentinoenamel junction caused by elastic modulus mismatch.
Biomaterials
Mixed-mode stress intensity factors for kink cracks with finite kink length loaded in tension and bending: application to dentin and enamel.
Journal of the mechanical behavior of biomedical materials
Zeta-potential and particle size analysis of human amelogenins.
Journal of dental research
The fracture behaviour of dental enamel.
Biomaterials
Biomechanical perspective on the remineralization of dentin.
Caries research
Enzymatic Processing of Amelogenin during Continuous Crystallization of Apatite.
Journal of materials research
The cooperative self-assembly of 25 and 23kDa amelogenins.
Journal of structural biology
Mechanical properties of mineralized collagen fibrils as influenced by demineralization.
Journal of structural biology
Peritubular dentin lacks piezoelectricity.
Journal of dental research
Elevated TGF-beta2 signaling in dentin results in sex related enamel defects.
Archives of oral biology
On the increasing fragility of human teeth with age: a deep-UV resonance Raman study.
Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research
High-resolution imaging of proteins in human teeth by scanning probe microscopy.
Biochemical and biophysical research communications
Effect of degradation rates of resorbable phosphate invert glasses on in vitro osteoblast proliferation.
Journal of biomedical materials research. Part A
Self-assembly and effect on crystal growth of the leucine-rich amelogenin peptide.
European journal of oral sciences
Glucocorticoid-treated mice have localized changes in trabecular bone material properties and osteocyte lacunar size that are not observed in placebo-treated or estrogen-deficient mice.
Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research
Amelogenin control over apatite crystal growth is affected by the pH and degree of ionic saturation.
Orthodontics & craniofacial research
Genome-wide transcription profiling of the early phase of biofilm formation by Candida albicans.
Eukaryotic cell
MEPE is downregulated as dental pulp stem cells differentiate.
Archives of oral biology
Amelogenin-guided crystal growth on fluoroapatite glass-ceramics.
Journal of dental research
The effect of a self-etching primer on the continuous demineralization of dentin.
European journal of oral sciences
The importance of intrafibrillar mineralization of collagen on the mechanical properties of dentin.
Journal of dental research
Dentin caries activity status related to hardness and elasticity.
European journal of oral sciences
Nanoindentation and storage of teeth.
Journal of biomechanics
In situ atomic force microscopy of partially demineralized human dentin collagen fibrils.
Journal of structural biology
The functional width of the dentino-enamel junction determined by AFM-based nanoscratching.
Journal of structural biology
Nanomechanical properties of hydrated carious human dentin.
Journal of dental research
Mechanical properties of human dental enamel on the nanometre scale.
Archives of oral biology
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