1. 1. Engquist B, Bergendal T, Kallus T, Linden U. A retrospective multicentre evaluation of osseointegrated implants supporting overdenture. Int J Oral Maxillofac Implants 1988 Summer;3(2):129-134.
2. 2. Lindquist LW, Carlsson GE, Jemt T. A prospective 15-year follow-up study of mandibular fixed prostheses supported by osseointegrated implants. Clinical results and marginal bone loss. Clin Oral Implants Res 1996 Dec;7(4):329-336.
3. 3. Albrektsson T. A multicenter report on osseointegrated oral implants. J Prosthet Dent 1988 Jul;60(1):75-84.
4. 4. Jemt T, Chai J, Harnett J, Heath MR, Hutton JE, Johns RB, McKenna S, McNamara DC, van Steenberghe D, Taylor R, et al. A 5-year prospective multicenter follow-up report on overdenture supported by osseointegrated implants. Int J Oral Maxillofac Implants 1996 May-Jun;11(3):291-298.
5. 5. Neart I, De Clercq M, Theuniers G, Schepers E. Overdentures supported by osseointegrated fixtures for the edentulous mandible: A 2.5-year report. Int J Oral Maxillofac Implants 1998 Fall;3(3):191-196.