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Figure 3: Failure case of PRF Group - (a) Preoperative intraoral periapical radiograph showing radiolucency close to the mesial pulp horn of mandibular 1st primary molar. (b) Postoperative intraoral periapical radiograph showing treated mandibular 1st molar with platelet-rich fibrin pulpotomy. (c) Follow-up intraoral periapical radiograph after 6 months showing furcal and periapical radiolucency related with mandibular 1st primary molars

Figure 3: Failure case of PRF Group - (a) Preoperative intraoral periapical radiograph showing radiolucency close to the mesial pulp horn of mandibular 1<sup>st</sup> primary molar. (b) Postoperative intraoral periapical radiograph showing treated mandibular 1<sup>st</sup> molar with platelet-rich fibrin pulpotomy. (c) Follow-up intraoral periapical radiograph after 6 months showing furcal and periapical radiolucency related with mandibular 1<sup>st</sup> primary molars