### Abstract

There is limited research defining the minimally acceptable porcelain margin angle required to withstand the stresses incurred during seating a restoration. A mathematical model was derived to calculate this critical porcelain margin angle. The factors involved in margin fracture were determined to be the tensile strength of the porcelain, the axial reduction, the diameter of the tooth, the porcelain margin angle, and the seating force. As the seating force increases, the porcelain margin angle required to prevent failure also increases. Increasing either the axial reduction or the diameter of the tooth allowed the minimum porcelain margin angle to decrease.

Original language | English (US) |
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Pages (from-to) | 467-472 |

Number of pages | 6 |

Journal | Journal of Prosthetic Dentistry |

Volume | 93 |

Issue number | 5 |

DOIs | |

State | Published - Jan 1 2005 |

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### ASJC Scopus subject areas

- Oral Surgery

### Cite this

*Journal of Prosthetic Dentistry*,

*93*(5), 467-472. https://doi.org/10.1016/j.prosdent.2005.02.002

**Mathematical derivation of the minimally acceptable all-porcelain margin angle.** / Dalvit, Deborah L.; Jackson, R. A.; Hawkins, M. Chad; Parker, Merle H.

Research output: Contribution to journal › Article

*Journal of Prosthetic Dentistry*, vol. 93, no. 5, pp. 467-472. https://doi.org/10.1016/j.prosdent.2005.02.002

}

TY - JOUR

T1 - Mathematical derivation of the minimally acceptable all-porcelain margin angle

AU - Dalvit, Deborah L.

AU - Jackson, R. A.

AU - Hawkins, M. Chad

AU - Parker, Merle H

PY - 2005/1/1

Y1 - 2005/1/1

N2 - There is limited research defining the minimally acceptable porcelain margin angle required to withstand the stresses incurred during seating a restoration. A mathematical model was derived to calculate this critical porcelain margin angle. The factors involved in margin fracture were determined to be the tensile strength of the porcelain, the axial reduction, the diameter of the tooth, the porcelain margin angle, and the seating force. As the seating force increases, the porcelain margin angle required to prevent failure also increases. Increasing either the axial reduction or the diameter of the tooth allowed the minimum porcelain margin angle to decrease.

AB - There is limited research defining the minimally acceptable porcelain margin angle required to withstand the stresses incurred during seating a restoration. A mathematical model was derived to calculate this critical porcelain margin angle. The factors involved in margin fracture were determined to be the tensile strength of the porcelain, the axial reduction, the diameter of the tooth, the porcelain margin angle, and the seating force. As the seating force increases, the porcelain margin angle required to prevent failure also increases. Increasing either the axial reduction or the diameter of the tooth allowed the minimum porcelain margin angle to decrease.

UR - http://www.scopus.com/inward/record.url?scp=18344381789&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=18344381789&partnerID=8YFLogxK

U2 - 10.1016/j.prosdent.2005.02.002

DO - 10.1016/j.prosdent.2005.02.002

M3 - Article

C2 - 15867757

AN - SCOPUS:18344381789

VL - 93

SP - 467

EP - 472

JO - Journal of Prosthetic Dentistry

JF - Journal of Prosthetic Dentistry

SN - 0022-3913

IS - 5

ER -