Fig.1

Panoramic radiograph before the tooth extraction (2015.9) showed 48 mesioangular impacted

Fig.2

Mandibular CT (2016.3) showed clear boundary of dead bone in right mandibular molar region and alveolar bone resorption at 46 root apex

Fig.3

The left wrist X ray (2016.10) showed the low-density area of the scaphoid center

Fig.4

Pathological report after surgery (2016.10) showed that a large amount of granulation tissue with fibrous tissue hyperplasia, dead bone fragments and cartilage degeneration, no actino-mycosis infection

Fig.5

Preoperative mouth examination (2017.5) showed the forma-tion of dead bone in the right mandibular molar region, the flap was covered with hyperplasia

Fig.6

Preoperative examination (2017.5) showed that dead bone had clear boundaries, 46 alveolar bone was destroyed deep to the apex

Fig.7

Postoperative scars on the left wrist (2017.5)

Fig.8

Postoperative pathology (2017.5) reported granulation tissue with necrosis, calcification mass and actinomycetes

Fig.9

The incision healed well, soft tissue morphology was normal (2017.8)

Fig.10

Panoramic radiograph (2017.8) showed that the original dead bone was replaced by smooth continuous cortical bone with-out newborn dead bone

Fig.11

CT (2017.8) showed that the posterior region of the right mandibular molar formed a smooth and clear cortical bone without newborn dead bone