1. Aghaloo TL, Moy PK (2007) Which hard tissue augmentation techniques are the most successful in furnishing bony support for implant placement? Int J Oral Maxillofac Implants 22(Suppl):49–70
2. Al-Nawas B, Schiegnitz E (2014) Augmentation procedures using bone substitute materials or autogenous bone – a systematic review and meta-analysis. Eur J Oral Implantol 7(Suppl 2):S219–S234
3. Araújo M, Linder E, Wennström J, Lindhe J (2008) The influence of Bio-Oss Collagen on healing an extraction socket: an experimental study in the dog. Int J Periodontics Restor Dent 28:123–135
4. Araújo M, Linder E, Lindhe J (2009) Effect of a xenograft on early bone formation in extraction sockets: an experimental study in dog. Clin Oral Implants Res 20:1–6
5. Belser UC, Schmid B, Higginbottom F et al (2004) Outcome analysis of implant restorations located in the anterior maxilla: a review of the recent literature. Int J Oral Maxillofac Implants 19:30