In the article titled “Platelet-Rich Fibrin Promotes Periodontal Regeneration and Enhances Alveolar Bone Augmentation” [1], in Figure 1(a), the distance between the implant margin and the alveolar socket was incorrectly referred to as 2.5 cm. It should be corrected to 2.5 mm as mentioned in figure's description. The corrected figure is shown below.
Figure 1.

Case I: (a) reveals a 2.5 mm gap at the mesial aspect of the implant replacing the upper left incisor.
Contributor Information
Yanmin Zhou, Email: zhouym1962@126.com.
Xianghong Luan, Email: luan@tamhsc.edu.
References
- 1.Li Q., Pan S., Dangaria S. J., et al. Platelet-rich fibrin promotes periodontal regeneration and enhances alveolar bone augmentation. BioMed Research International. 2013;2013:13. doi: 10.1155/2013/638043.638043 [DOI] [PMC free article] [PubMed] [Google Scholar]
