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Various techniques used for fragment reattachment. A: Simple reattachment; B: Internal dentinal groove; C: Labial and lingual double chamfer; D: Labial double chamfer and lingual over-contour.

Various techniques used for fragment reattachment. A: Simple reattachment; B: Internal dentinal groove; C: Labial and lingual double chamfer; D: Labial double chamfer and lingual over-contour.

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Figure 1: Various techniques used for fragment reattachment. A: Simple...
Figure 3: Group B. Fracture strength values (in MPa) by Simple...
Figure 4: Group C. Fracture strength values (in MPa) of tooth fragment...
Figure 6: Group E. Fracture strength values (in MPa) of tooth fragment...
+2 Values of physical and mechanical properties of tooth used for FEA 10 .
Finite element analysis for fracture resistance of reattached human tooth fragment with different types of retentive preparation techniques
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Full-text available
  • Aug 2022
Objective: Restoration of traumatized incisors by reattachment of the original tooth fragment appears to be the most conservative treatment approach. But the measurement of forces acting on natural tooth in-vivo poses many challenges. The advent of finite element analysis (FEA) has made it possible to demonstrate the propagation of stress through...
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... incisal edge and 2 mm distal from mesio-labial line angle at 30 • , 45 • , 70 • and 90 • angulation to the long axis of the tooth to obtain a mesio-angular fracture involving enamel and dentin (the strength values were noted). Depending on the type of retentive preparations and reattachment of the tooth fragment, models were divided into 5 groups (Fig. ...

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Citations

... According to Kulkarni et al., labial double chamfer with lingual overcontouring (54.49%), labial and lingual double chamfer (51.31%), and simple reattachment (28.27%) showed the maximum recovery of fracture resistance. The internal dentinal groove was found to have the highest recovery rate (64.97%) [24]. ...
... Due to prebonding preparation, proper positioning of the fragment may become more challenging if there is a loss of perfect fit between the segments [24]. To overcome this problem, the external chamfer technique was introduced. ...
... When comparing sound teeth with composite overcontouring, Reis et al. in 2001 showed the highest recovery of fracture strength in their study [21]. Kulkarni et al. in 2022 found the internal dentinal groove had the maximum recovery of fracture resistance (64.97%), followed by the labial double chamfer with lingual overcontour (54.49%), the labial and lingual double chamfer (51.31%), and simple reattachment (28.27%) [24]. A study comparing the bond strength of fractured teeth reattached using four different procedures was carried out by Rajurkar et al. in 2020. ...
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