Improved anchoring nails : design and analysis of resistance ability : Tensile test and finite element analysis (FEA) of improved anchoring nails used in temporomandibular joint (TMJ) disc anchor

BACKGROUND: Anchorage is one of the most important treatments for severe temporomandibular joint disorder (TMD). Anchoring nails have shown great success in clinical trials; however, they can break under pressure and are difficult to remove. In this study, we aimed to evaluate an improved anchoring nail and its mechanical stability.

METHODS: The experiment consisted of two parts: a tensile test and finite element analysis (FEA). First, traditional and improved anchoring nails were implanted into the condylar cortical bone and their tensile strength was measured using a tension meter. Second, a three-dimensional finite element model of the condyles with implants was established and FEA was performed with forces from three different directions.

RESULTS: The FEA results showed that the total force of the traditional and improved anchoring nails is 48.2 N and 200 N, respectively. The mean (±s.d.) maximum tensile strength of the traditional anchoring nail with a 3-0 suture was 27.53 ± 5.47 N. For the improved anchoring nail with a 3-0 suture it was 25.89 ± 2.64 N and with a 2-0 suture it was above 50 N. The tensile strengths of the traditional and improved anchoring nails with a 3-0 suture was significantly different (P = 0.033-< 0.05). Furthermore, the difference between the traditional anchoring nail with a 3-0 suture and the improved anchoring nail with a 2-0 suture was also significantly different (P = 0.000-< 0.01).

CONCLUSION: The improved anchoring nail, especially when combined with a 2-0 suture, showed better resistance ability compared with the traditional anchoring nail.

Medienart:

E-Artikel

Erscheinungsjahr:

2018

Erschienen:

2018

Enthalten in:

Zur Gesamtaufnahme - volume:18

Enthalten in:

BMC oral health - 18(2018), 1 vom: 25. Aug., Seite 150

Sprache:

Englisch

Beteiligte Personen:

Zhou, Z H [VerfasserIn]
Chen, X Z [VerfasserIn]
Chen, X W [VerfasserIn]
Wang, Y X [VerfasserIn]
Zhang, S Y [VerfasserIn]
Sun, S F [VerfasserIn]
Zhen, J Z [VerfasserIn]

Links:

Volltext

Themen:

Anchoring nail
D1JT611TNE
FEA
Finite element analysis
Journal Article
Mandibular condyle
Research Support, Non-U.S. Gov't
Suture
Temporalmandibular joint disc anchorage
Tensile test
Titanium

Anmerkungen:

Date Completed 09.09.2019

Date Revised 09.09.2019

published: Electronic

Citation Status MEDLINE

doi:

10.1186/s12903-018-0606-3

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM287829332