PMC7757962_01
Clinical view showing the intactness of the dental-periodontal tissues
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F1
Russia). Periodontal probing at the level of the gingival sulcus confirmed the intactness of the epithelial attachment. Retro-alveolar radiographic examination revealed a double root fracture of tooth 42, the first one situated at the apical level and the second situated more towards the crown (Figures 1, 2).
Radiography after the trauma and the double root fracture for tooth 42, with a fracture line in the apical third and another at the crown involving dislocation of the coronal fragment (arrows)
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F2
Russia). Periodontal probing at the level of the gingival sulcus confirmed the intactness of the epithelial attachment. Retro-alveolar radiographic examination revealed a double root fracture of tooth 42, the first one situated at the apical level and the second situated more towards the crown (Figures 1, 2).
Clinical lingual view of the oral cavity after installing the splinting system from tooth 41 to tooth 43
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F3
A semi-rigid extra-coronal splinting was performed as an emergency treatment using a 3/10 mm braided steel wire cut to size and glued in place with light-polymerisable composite resin (Herculite  XRV Ultra, Kerr Hawe, USA) on the lingual side of teeth 41, 42 and 43 (Figure 3).
Radiographic X-ray control after splinting
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F4
A control X-ray was taken (Figure 4).
Radiographic X-ray at 6 months showing consolidation of the apical one-third fracture and absence of consolidation of the coronal one-third one
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F5
The outcomes at the sixth month revealed that pulp vitality was still preserved, consolidation of the apical fracture had occurred, but coronal root fracture showed no signs of calcification (Figure 5).
Positive electrical test of pulp vitality (PT 02 Dental Pulp Tester, Averon) for tooth 42
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F6
Radiographic control at three years showing probable consolidation process on the 1/3 coronal
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F7
Clinical view at 3.5 years showing stability of the aesthetics and the hard and soft tissues
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F8