The aim of this study was to investigate the effect of dental caries on the stability of the periodontal system. This study presents a numerical analysis performed with three-dimensional (3D) finite element (FE) method to evaluate stresses in the bone surrounding the tooth with dynamic mastication combined loadings. In this work, we present a comparative study on infected and healthy periodontal systems. The infected tooth was modeled and a caries defect was introduced to the tooth coronal part. The infected tooth was evaluated and equivalent von Mises interface stress values were obtained for comparison with the ones exhibited by the healthy tooth. Our results by 3D FE analysis indicated that maximum stresses occurred primarily at the cervical level of root and alveolar bone. In the cortical bone, the stress value was greater in infected system (21.641 MPa) than in healthy system (15.752 MPa), i.e., a 37.4% increase. However, in the trabecular bone we observed only 1.6% increase in the equivalent stress values for the infected tooth model. Stress concentration at the cervical level may cause abnormal bone remodeling or bone loss, resulting loss of tooth attachment or bone damage. Our findings showed that decayed single-rooted teeth are more vulnerable to apical root resorption than healthy teeth. The numerical method presented in this study not only can aid the elucidation of the biomechanics of teeth infected by caries but also can be implemented to investigate the effectiveness of new advanced restorative materials and protocols.

References

References
1.
Sischo
,
L.
, and
Broder
,
H. L.
,
2011
, “
Oral Health-Related Quality of Life: What, Why, How, and Future Implications
,”
J. Dent. Res.
,
90
(
11
), pp.
1264
1270
.
2.
Ng
,
S. K. S.
, and
Leung
,
W. K.
,
2006
, “
Oral Health-Related Quality of Life and Periodontal Status
,”
Community Dent. Oral Epidemiol.
,
34
(
2
), pp.
114
122
.
3.
Gerritsen
,
A. E.
,
Allen
,
P. F.
,
Witter
,
D. J.
,
Bronkhorst
,
E. M.
, and
Creugers
,
N. H. J.
,
2010
, “
Tooth Loss and Oral Health-Related Quality of Life: A Systematic Review and Meta-Analysis
,”
Health Qual. Life Outcomes
,
8
(
1
), pp.
126
131
.
4.
Joshipura
,
K. J.
,
Rimm
,
E. B.
,
Douglass
,
C. W.
,
Trichopoulos
,
D.
,
Ascherio
,
A.
, and
Willett
,
W. C.
,
1996
, “
Poor Oral Health and Coronary Heart Disease
,”
J. Dent. Res.
,
75
(
9
), pp.
1631
1636
.
5.
Kaur
,
G.
,
Holtfreter
,
B.
,
Rathmann
,
W. G.
,
Schwahn
,
C.
,
Wallaschofski
,
H.
,
Schipf
,
S.
,
Nauck
,
M.
, and
Kocher
,
T.
,
2009
, “
Association Between Type 1 and Type 2 Diabetes With Periodontal Disease and Tooth Loss
,”
J. Clin. Periodontol.
,
36
(
9
), pp.
765
774
.
6.
Patel
,
M. H.
,
Kumar
,
J. V.
, and
Moss
,
M. E.
,
2013
, “
Diabetes and Tooth Loss an Analysis of Data From the National Health and Nutrition Examination Survey, 2003–2004
,”
J. Am. Dent. Assoc.
,
144
(
5
), pp.
478
485
.
7.
Centers for Disease Control and Prevention
,
2012
, “
National Oral Health Surveillance System: Oral Health Indicators
,” http://www.cdc.gov/cdi
8.
Larsen
,
M. J.
, and
Fejerskov
,
O.
,
1989
, “
Chemical and Structural Challenges in Remineralization of Dental Enamel Lesions
,”
Scand. J. Dent. Res.
,
97
(
4
), pp.
285
296
.
9.
Bowden
,
G. H. W.
,
1990
, “
Microbiology of Root Surface Caries in Humans
,”
J. Dent. Res.
,
69
(
5
), pp.
1205
1210
.
10.
Mahmoud
,
A. M.
,
Ngan
,
P.
,
Crout
,
R.
, and
Mukdadi
,
O. M.
,
2010
, “
High-Resolution 3D Ultrasound Jawbone Surface Imaging for Diagnosis of Periodontal Bony Defects: An In Vitro Study
,”
Ann. Biomed. Eng.
,
38
(
11
), pp.
3409
3422
.
11.
Goldman
,
H.
, and
Cohen
,
D.
,
1958
, “
The Infra-Bony Pocket: Classification and Treatment
,”
J. Periodontol.
,
29
(
4
), pp.
272
291
.
12.
Chai
,
H.
,
Lee
,
J. J. W.
,
Constantino
,
P. J.
,
Lucas
,
P. W.
, and
Lawn
,
B. R.
,
2009
, “
Remarkable Resilience of Teeth
,”
Proc. Natl. Acad. Sci. U.S.A.
,
106
(
18
), pp.
7289
7293
.
13.
Currey
,
J. D.
,
1964
, “
Three Analogies to Explain the Mechanical Properties of Bone
,”
Biorheology
,
2
(
1
), pp.
1
10
.
14.
Demarco
,
T. J.
, and
Paine
,
S.
,
1974
, “
Mandibular Dimensional Change
,”
J. Prosthet. Dent.
,
31
(
5
), pp.
482
485
.
15.
Grippo
,
J. O.
,
Simring
,
M.
, and
Schreiner
,
S.
,
2004
, “
Attrition, Abrasion, Corrosion and Abfraction Revisited
,”
J. Am. Dent. Assoc.
,
135
(
8
), pp.
1109
1118
.
16.
Wood
,
I.
,
Jawad
,
Z.
,
Paisley
,
C.
, and
Brunton
,
P.
,
2008
, “
Non-Carious Cervical Tooth Surface Loss: A Literature Review
,”
J. Dent.
,
36
(
10
), pp.
759
766
.
17.
Ammar
,
H. H.
,
Ngan
,
P.
,
Crout
,
R. J.
,
Mucino
,
V. H.
, and
Mukdadi
,
O. M.
,
2011
, “
Three-Dimensional Modeling and Finite Element Analysis in Treatment Planning for Orthodontic Tooth Movement
,”
Am. J. Orthod. Dentofacial Orthop.
,
139
(
1
), pp.
e59
e71
.
18.
Lee
,
W. C.
, and
Eakle
,
W. S.
,
1984
, “
Possible Role of Tensile-Stress in the Etiology of Cervical Erosive Lesions of Teeth
,”
J. Prosthet. Dent.
,
52
(
3
), pp.
374
380
.
19.
Merdji
,
A.
,
Mootanah
,
R.
,
Bouiadjra
,
B. A. B.
,
Benaissa
,
A.
,
Aminallah
,
L.
,
Chikh
,
E. O.
, and
Mukdadi
,
S.
,
2013
, “
Stress Analysis in Single Molar Tooth
,”
Mater. Sci. Eng. C-Mater. Biol. Appl.
,
33
(
2
), pp.
691
698
.
20.
Provatidis
,
C. G.
,
2000
, “
A Comparative FEM-Study of Tooth Mobility Using Isotropic and Anisotropic Models of the Periodontal Ligament
,”
Med. Eng. Phys.
,
22
(
5
), pp.
359
370
.
21.
Selna
,
L. G.
,
Shillingburg
,
H. T.
, and
Kerr
,
P. A.
,
1975
, “
Finite-Element Analysis of Dental Structures—Axisymmetric and Plane Stress Idealizations
,”
J. Biomed. Mater. Res.
,
9
(
2
), pp.
237
252
.
22.
Lin
,
C. L.
,
Chang
,
C. H.
,
Wang
,
C. H.
,
Ko
,
C. C.
, and
Lee
,
H. E.
,
2001
, “
Numerical Investigation of the Factors Affecting Interfacial Stresses in an MOD Restored Tooth by Auto-Meshed Finite Element Method
,”
J. Oral Rehabil.
,
28
(
6
), pp.
517
525
.
23.
Qian
,
H. H.
,
Chen
,
J.
, and
Katona
,
T. R.
,
2001
, “
The Influence of PDL Principal Fibers in a 3-Dimensional Analysis of Orthodontic Tooth Movement
,”
Am. J. Orthod. Dentofacial Orthop.
,
120
(
3
), pp.
272
279
.
24.
Thresher
,
R. W.
, and
Saito
,
G. E.
,
1973
, “
The Stress Analysis of Human Teeth
,”
J. Biomech.
,
6
(5), pp.
443
449
.
25.
Miyashita
,
E. R.
,
Mattos
,
B. S. C.
,
Noritomi
,
P. Y.
, and
Navarro
,
H.
,
2012
, “
Finite Element Analysis of Maxillary Bone Stress Caused by Aramany Class IV Obturator Prostheses
,”
J. Prosthet. Dent.
,
107
(
5
), pp.
336
342
.
26.
Rubin
,
C.
,
Krishnamurthy
,
N.
,
Capilouto
,
E.
, and
Yi
,
H.
,
1983
, “
Stress Analysis of the Human Tooth Using a 3-Dimensional Finite-Element Model
,”
J. Dent. Res.
,
62
(
2
), pp.
82
86
.
27.
Geng
,
J. P.
,
Tan
,
K. B. C.
, and
Liu
,
G. R.
,
2001
, “
Application of Finite Element Analysis in Implant Dentistry: A Review of the Literature
,”
J. Prosthet. Dent.
,
85
(
6
), pp.
585
598
.
28.
Jasmine
,
M. I. F.
,
Yezdani
,
A. A.
,
Tajir
,
F.
, and
Venu
,
R. M.
,
2012
, “
Analysis of Stress in Bone and Microimplants During En-Masse Retraction of Maxillary and Mandibular Anterior Teeth With Different Insertion Angulations: A 3-Dimensional Finite Element Analysis Study
,”
Am. J. Orthod. Dentofacial Orthop.
,
141
(
1
), pp.
71
80
.
29.
Zhang
,
Y. R.
,
Du
,
W.
,
Zhou
,
X. D.
, and
Yu
,
H. Y.
,
2014
, “
Review of Research on the Mechanical Properties of the Human Tooth
,”
Int. J. Oral Sci.
,
6
(
2
), pp.
61
69
.
30.
Beer
,
F. P.
,
Johnston
,
E. R.
,
DeWolf
,
J. T.
, and
Mazurek
,
D. F.
,
2014
,
Mechanics of Materials
,
7th ed.
,
McGraw-Hill Education
,
New York
.
31.
Sameshima
,
G. T.
, and
Sinclair
,
P. M.
,
2001
, “
Predicting and Preventing Root Resorption: Part II. Treatment Factors
,”
Am. J. Orthod. Dentofacial Orthop.
,
119
(
5
), pp.
511
515
.
32.
Yoshida
,
N.
,
Koga
,
Y.
,
Peng
,
C. L.
,
Tanaka
,
E.
, and
Kobayashi
,
K.
,
2001
, “
In Vivo Measurement of the Elastic Modulus of the Human Periodontal Ligament
,”
Med. Eng. Phys.
,
23
(
8
), pp.
567
572
.
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