Behaviour of teeth under various loading conditions with finite element method

Takahashi, Noriaki; Kitagami, Tetsuya; Komori, Tomio

doi:10.1111/j.1365-2842.1980.tb00464.x

Cited by 37 publications

(12 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In models where the PDL is included there is a considerable range of published E values derived from experimental studies, ranging from 0.07 to 1750 MPa (Thresher & Saito, 1973; Yettram et al. 1976; Takahashi et al. 1980; Atmaram & Mohammed, 1981; Cook et al.…”

Section: Introductionmentioning

confidence: 99%

“…One reason for modelling the PDL so simply, as an isotropic, homogeneous and linear elastic material may be the plethora of experimental data that describe the complicated anisotropic and heterogeneous nature of the PDL. In models where the PDL is included there is a considerable range of published E values derived from experimental studies, ranging from 0.07 to 1750 MPa (Thresher & Saito, 1973;Yettram et al 1976;Takahashi et al 1980;Atmaram & Mohammed, 1981;Cook et al 1982;Tanne & Sakuda, 1983;Williams & Edmundson, 1984;Farah et al 1989;Andersen et al 1991;Goel et al 1992;Ko et al 1992;Korioth & Hannam, 1994). As the PDL is a loadsensitive tissue (Nokubi et al 1977;Nikishihira et al 1996;Vollmer et al 1999) it is not entirely surprising that a range of loading regimens have generated such variation in the published E values for the PDL (Thresher & Saito, 1973;Yettram et al 1976;Takahashi et al 1980;Atmaram & Mohammed, 1981;Cook et al 1982;Tanne & Sakuda, 1983;Williams & Edmundson, 1984;Farah et al 1989;Andersen et al 1991;Wilson, 1991;Goel et al 1992;Ko et al 1992;Korioth & Hannam, 1994).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The mechanical function of the periodontal ligament in the macaque mandible: a validation and sensitivity study using finite element analysis

2010

View full text Add to dashboard Cite

Whilst the periodontal ligament (PDL) acts as an attachment tissue between bone and tooth, hypotheses regarding the role of the PDL as a hydrodynamic damping mechanism during intraoral food processing have highlighted its potential importance in finite element (FE) analysis. Although experimental and constitutive models have correlated the mechanical function of the PDL tissue with its anisotropic, heterogeneous, viscoelastic and non-linear elastic nature, in many FE simulations the PDL is either present or absent, and when present is variably modelled. In addition, the small space the PDL occupies and the inability to visualize the PDL tissue using lCT scans poses issues during FE model construction and so protocols for the PDL thickness also vary. In this paper we initially test and validate the sensitivity of an FE model of a macaque mandible to variations in the Young's modulus and the thickness of the PDL tissue. We then tested the validity of the FE models by carrying out experimental strain measurements on the same mandible in the laboratory using laser speckle interferometry. These strain measurements matched the FE predictions very closely, providing confidence that material properties and PDL thickness were suitably defined. The FE strain results across the mandible are generally insensitive to the absence and variably modelled PDL tissue. Differences are only found in the alveolar region adjacent to the socket of the loaded tooth. The results indicate that the effect of the PDL on strain distribution and ⁄ or absorption is restricted locally to the alveolar bone surrounding the teeth and does not affect other regions of the mandible.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The mechanical function of the periodontal ligament in the macaque mandible: a validation and sensitivity study using finite element analysis

2010

View full text Add to dashboard Cite

show abstract

“…This depends on the stiffness of incisors, which, in turn, is directly proportional to the residual enamel amount (27). The relation of the long axis of the tooth to the operating load renders the physiological load of upper incisors particularly disadvantageous (28).…”

Section: Discussionmentioning

confidence: 99%

In Vitro Fracture Resistance and Deflection of Pulpless Teeth Restored with Fiber Posts and Prepared for Veneers

D’Arcangelo

Angelis

Vadini

et al. 2008

Journal of Endodontics

View full text Add to dashboard Cite

“…the contacts established at light pressure probably guide the mandible in an anterior direction when a harder pressure is applied. Another explanation could be the different degrees of vertical mobility in molars, premolars and anterior teeth respectively, which have been shown to exist (Picton, 1963a;Takahashi, Kitagami & Komori, 1980). The greater mobility in the posterior region in combination with the localization of the elevator muscles leads to some intrusion of the posterior teeth at hard pressure with more anterior teeth contacts as a consequence.…”

Section: Discussionmentioning

confidence: 99%

A clinical study of the distribution of occlusal tooth contacts in the intercuspal position at light and hard pressure in adults

Riise

Ericsson

1983

J of Oral Rehabilitation

View full text Add to dashboard Cite

Young adults (Md 24) and Adults (Md 41) were examined with respect to the distribution of occlusal contacts in molars, premolars and anterior teeth when exerting light and hard pressure respectively in the habitual intercuspal position. There was no difference between the right and left side and the number of contacts per tooth was low. In all groups of teeth there was a smaller number of contacts at light pressure. The lower number of contacts at light pressure in Adults when comparing with Young adults was related only to the anterior teeth. The increase of the number of contacts at hard pressure was greater for the anterior teeth than for the molars. In cases where there was a greater number of contacts present on one side, the distribution did not alter significantly when changing from light to hard pressure. Neither did the articulator-adjusted intercuspal position differ significantly in this respect from the clinically recorded intercuspal position at hard pressure. A further result was that about 50% of the individuals had 60% or more contacts on one side at light pressure. These findings stress the importance of meticulous care when performing occlusal adjustment, as the number of contacts per tooth is low and indicates the need for observing the difference between light and hard pressure.

show abstract

Behaviour of teeth under various loading conditions with finite element method

Cited by 37 publications

References 11 publications

The mechanical function of the periodontal ligament in the macaque mandible: a validation and sensitivity study using finite element analysis

The mechanical function of the periodontal ligament in the macaque mandible: a validation and sensitivity study using finite element analysis

In Vitro Fracture Resistance and Deflection of Pulpless Teeth Restored with Fiber Posts and Prepared for Veneers

A clinical study of the distribution of occlusal tooth contacts in the intercuspal position at light and hard pressure in adults

Contact Info

Product

Resources

About