Appendix Included studies ABU-TA'A, M., QUIRYNEN, M., TEUGHELS, W. & VAN STEENBERGHE, D. 2008. Asepsis during periodontal surgery involving oral implants and the usefulness of peri-operative antibiotics: a prospective, randomized, controlled clinical trial. J Clin Periodontol, 35, 58-63. ANDERSSON, B., SCHARER, P., SIMION, M. & BERGSTROM, C. 1999. Ceramic implant abutments used for short-span fixed partial dentures: a prospective 2-year multicenter study. Int J Prosthodont, 12, 318-24. ANDERSSON, B., TAYLOR, A., LANG, B. R., SCHELLER, H., SCHARER, P., SORENSEN, J. A. & TARNOW, D. 2001. Alumina ceramic implant abutments used for single-tooth replacement: a prospective 1- to 3-year multicenter study. Int J Prosthodont, 14, 432-8. BIANCHI, A. E. & SANFILIPPO, F. 2004. Single-tooth replacement by immediate implant and connective tissue graft: a 1-9-year clinical evaluation. Clin Oral Implants Res, 15, 269-77. CANNIZZARO, G., LEONE, M., TORCHIO, C., VIOLA, P. & ESPOSITO, M. 2008. Immediate versus early loading of 7-mm-long flapless-placed single implants: a split-mouth randomised controlled clinical trial. Eur J Oral Implantol, 1, 277-92. COCHRAN, D. L., JACKSON, J. M., JONES, A. A., JONES, J. D., KAISER, D. A., TAYLOR, T. D., WEBER, H. P., HIGGINBOTTOM, F. L., RICHARDSON, J. R. & OATES, T. 2011. A 5-year prospective multicenter clinical trial of non-submerged dental implants with a titanium plasma-sprayed surface in 200 patients. J Periodontol, 82, 990-9. CORTELLINI, P., STALPERS, G., MOLLO, A. & TONETTI, M. S. 2011. Periodontal regeneration versus extraction and prosthetic replacement of teeth severely compromised by attachment loss to the apex: 5-year results of an ongoing randomized clinical trial. J Clin Periodontol. DEN HARTOG, L., RAGHOEBAR, G. M., STELLINGSMA, K., VISSINK, A. & MEIJER, H. J. 2011. Immediate non-occlusal loading of single implants in the aesthetic zone: a randomized clinical trial. J Clin Periodontol, 38, 186-94. FELICE, P., CHECCHI, V., PISTILLI, R., SCARANO, A., PELLEGRINO, G. & ESPOSITO, M. 2009a. Bone augmentation versus 5-mm dental implants in posterior atrophic jaws. Four-month post-loading results from a randomised controlled clinical trial. Eur J Oral Implantol, 2, 267-81. FELICE, P., MARCHETTI, C., PIATTELLI, A., PELLEGRINO, G., CHECCHI, V., WORTHINGTON, H. & ESPOSITO, M. 2008. Vertical ridge augmentation of the atrophic posterior mandible with interpositional block grafts: bone from the iliac crest versus bovine anorganic bone. Eur J Oral Implantol, 1, 183-98. FELICE, P., SCARANO, A., PISTILLI, R., CHECCHI, L., PIATTELLI, M., PELLEGRINO, G. & ESPOSITO, M. 2009b. A comparison of two techniques to augment maxillary sinuses using the lateral window approach: rigid synthetic resorbable barriers versus anorganic bovine bone. Five-month post-loading clinical and histological results of a pilot randomised controlled clinical trial. Eur J Oral Implantol, 2, 293-306. FORTIN, T., BOSSON, J. L., ISIDORI, M. & BLANCHET, E. 2006. Effect of flapless surgery on pain experienced in implant placement using an image-guided system. Int J Oral Maxillofac Implants, 21, 298-304. GALLUCCI, G. O., GRUTTER, L., NEDIR, R., BISCHOF, M. & BELSER, U. C. 2011. Esthetic outcomes with porcelain-fused-to-ceramic and all-ceramic single-implant crowns: a randomized clinical trial. Clin Oral Implants Res, 22, 62-9. GATTEN, D. L., RIEDY, C. A., HONG, S. K., JOHNSON, J. D. & COHENCA, N. 2011. Quality of life of endodontically treated versus implant treated patients: a University-based qualitative research study. J Endod, 37, 903-9. HAMMERLE, C. H., JUNG, R. E., SANZ, M., CHEN, S., MARTIN, W. C., JACKOWSKI, J., IVANOFF, C. J., CORDARO, L., GANELES, J., WEINGART, D., WILTFANG, J. & GAHLERT, M. 2011. Submerged and transmucosal healing yield the same clinical outcomes with two-piece implants in the anterior maxilla and mandible: interim 1-year results of a randomized, controlled clinical trial. Clin Oral Implants Res. HARRISON, P., POLYZOIS, I., HOUSTON, F. & CLAFFEY, N. 2009. Patient satisfaction relating to implant treatment by undergraduate and postgraduate dental students--a pilot study. Eur J Dent Educ, 13, 184-8. HUI, E., CHOW, J., LI, D., LIU, J., WAT, P. & LAW, H. 2001. Immediate provisional for single-tooth implant replacement with Branemark system: preliminary report. Clin Implant Dent Relat Res, 3, 79-86. KAPUR, K. K. 1991. Veterans Administration Cooperative Dental Implant Study--comparisons between fixed partial dentures supported by blade-vent implants and removable partial dentures. Part IV: Comparisons of patient satisfaction between two treatment modalities. J Prosthet Dent, 66, 517-30. KARABUDA, Z. C., BOLUKBASI, N., ARAL, A., BASEGMEZ-ZEREN, C. & OZDEMIR, T. 2007. Comparison of analgesic and anti-inflammatory efficacy of selective and non-selective cyclooxygenase-2 inhibitors in dental implant surgery. J Periodontol, 78, 2284-8. LANG, N. P., TONETTI, M. S., SUVAN, J. E., PIERRE BERNARD, J., BOTTICELLI, D., FOURMOUSIS, I., HALLUND, M., JUNG, R., LAURELL, L., SALVI, G. E., SHAFER, D. & WEBER, H. P. 2007. Immediate implant placement with transmucosal healing in areas of aesthetic priority. A multicentre randomized-controlled clinical trial I. Surgical outcomes. Clin Oral Implants Res, 18, 188-96. MEIJNDERT, L., MEIJER, H. J., STELLINGSMA, K., STEGENGA, B. & RAGHOEBAR, G. M. 2007. Evaluation of aesthetics of implant-supported single-tooth replacements using different bone augmentation procedures: a prospective randomized clinical study. Clin Oral Implants Res, 18, 715-9. NISSAN, J., BERMAN, O., GROSS, O., HAIM, B. & CHAUSHU, G. 2011. The influence of partial implant-supported restorations on chewing side preference. J Oral Rehabil, 38, 165-9. OHKUBO, C., KOBAYASHI, M., SUZUKI, Y. & HOSOI, T. 2008. Effect of implant support on distal-extension removable partial dentures: in vivo assessment. Int J Oral Maxillofac Implants, 23, 1095-101. RAGHOEBAR, G. M., SLATER, J. J., HARTOG, L., MEIJER, H. J. & VISSINK, A. 2009. Comparison of procedures for immediate reconstruction of large osseous defects resulting from removal of a single tooth to prepare for insertion of an endosseous implant after healing. Int J Oral Maxillofac Surg, 38, 736-43. SCHROPP, L. & ISIDOR, F. 2008. Clinical outcome and patient satisfaction following full-flap elevation for early and delayed placement of single-tooth implants: a 5-year randomized study. Int J Oral Maxillofac Implants, 23, 733-43. SCHROPP, L., ISIDOR, F., KOSTOPOULOS, L. & WENZEL, A. 2004. Patient experience of, and satisfaction with, delayed-immediate vs. delayed single-tooth implant placement. Clin Oral Implants Res, 15, 498-503. TALLARICO, M., VACCARELLA, A. & MARZI, G. C. 2011. Clinical and radiological outcomes of 1- versus 2-stage implant placement: 1-year results of a randomised clinical trial. Eur J Oral Implantol, 4, 13-20. TYMSTRA, N., RAGHOEBAR, G. M., VISSINK, A., DEN HARTOG, L., STELLINGSMA, K. & MEIJER, H. J. 2011. Treatment outcome of two adjacent implant crowns with different implant platform designs in the aesthetic zone: a 1-year randomized clinical trial. J Clin Periodontol, 38, 74-85. URBAN, T. & WENZEL, A. 2010. Discomfort experienced after immediate implant placement associated with three different regenerative techniques. Clin Oral Implants Res, 21, 1271-7. VELEZ, I., PARKER, W. B., SIEGEL, M. A. & HERNANDEZ, M. 2010. Cryopreserved amniotic membrane for modulation of periodontal soft tissue healing: a pilot study. J Periodontol, 81, 1797-804. WIESNER, G., ESPOSITO, M., WORTHINGTON, H. & SCHLEE, M. 2010. Connective tissue grafts for thickening peri-implant tissues at implant placement. One-year results from an explanatory split-mouth randomised controlled clinical trial. Eur J Oral Implantol, 3, 27-35. Excluded studies 2004. Patient versus specialist evaluation of conventional and implant prostheses. SADJ, 59, 29-31. AARTS, J. M., PAYNE, A. G. & THOMSON, W. M. 2008. Patients' evaluation of two occlusal schemes for implant overdentures. Clin Implant Dent Relat Res, 10, 140-56. AKOGLU, B., UCANKALE, M., OZKAN, Y. & KULAK-OZKAN, Y. 2011. Five-year treatment outcomes with three brands of implants supporting mandibular overdentures. Int J Oral Maxillofac Implants, 26, 188-94. ALLEN, F. & MCMILLAN, A. 2002. Food selection and perceptions of chewing ability following provision of implant and conventional prostheses in complete denture wearers. Clin Oral Implants Res, 13, 320-6. ALLEN, P. F., MCMILLAN, A. S. & LOCKER, D. 2001. An assessment of sensitivity to change of the Oral Health Impact Profile in a clinical trial. Community Dent Oral Epidemiol, 29, 175-82. ALLEN, P. F., THOMASON, J. M., JEPSON, N. J., NOHL, F., SMITH, D. G. & ELLIS, J. 2006. A randomized controlled trial of implant-retained mandibular overdentures. J Dent Res, 85, 547-51. ARAGON, C. E., CORNACCHIO, A. L., IBARRA, L. M., SAAD, M. N. & ZIBROWSKI, E. 2010. Implant overdentures: dental students' performance in fabrication, denture quality, and patient satisfaction. J Dent Educ, 74, 993-1001. AWAD, M., AL-SHAMRANY, M., LOCKER, D., ALLEN, F. & FEINE, J. 2008. Effect of reducing the number of items of the Oral Health Impact Profile on responsiveness, validity and reliability in edentulous populations. Community Dent Oral Epidemiol, 36, 12-20. AWAD, M. A. & FEINE, J. S. 1998. Measuring patient satisfaction with mandibular prostheses. Community Dent Oral Epidemiol, 26, 400-5. AWAD, M. A., LOCKER, D., KORNER-BITENSKY, N. & FEINE, J. S. 2000a. Measuring the effect of intra-oral implant rehabilitation on health-related quality of life in a randomized controlled clinical trial. J Dent Res, 79, 1659-63. AWAD, M. A., LUND, J. P., DUFRESNE, E. & FEINE, J. S. 2003a. Comparing the efficacy of mandibular implant-retained overdentures and conventional dentures among middle-aged edentulous patients: satisfaction and functional assessment. Int J Prosthodont, 16, 117-22. AWAD, M. A., LUND, J. P., SHAPIRO, S. H., LOCKER, D., KLEMETTI, E., CHEHADE, A., SAVARD, A. & FEINE, J. S. 2003b. Oral health status and treatment satisfaction with mandibular implant overdentures and conventional dentures: a randomized clinical trial in a senior population. Int J Prosthodont, 16, 390-6. AWAD, M. A., SHAPIRO, S. H., LUND, J. P. & FEINE, J. S. 2000b. Determinants of patients' treatment preferences in a clinical trial. Community Dent Oral Epidemiol, 28, 119-25. BAXMANN, M., MCDONALD, F., BOURAUEL, C. & JAGER, A. 2010. Expectations, acceptance, and preferences regarding microimplant treatment in orthodontic patients: A randomized controlled trial. Am J Orthod Dentofacial Orthop, 138, 250 e1-250 e10; discussion 250-1. BILHAN, H., GECKILI, O., SULUN, T. & BILGIN, T. 2011. 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R., UNGER, J. W., ELSWICK, R. K., JR. & GIGLIO, J. A. 1995. Prospective clinical evaluation of mandibular implant overdentures: Part II--Patient satisfaction and preference. J Prosthet Dent, 73, 364-9. CANNIZZARO, G., LEONE, M. & ESPOSITO, M. 2008a. Immediate versus early loading of two implants placed with a flapless technique supporting mandibular bar-retained overdentures: a single-blinded, randomised controlled clinical trial. Eur J Oral Implantol, 1, 33-43. CANNIZZARO, G., TORCHIO, C., LEONE, M. & ESPOSITO, M. 2008b. Immediate versus early loading of flapless-placed implants supporting maxillary full-arch prostheses: a randomised controlled clinical trial. Eur J Oral Implantol, 1, 127-39. CEYHAN, J. A., JOHNSON, G. H., LEPE, X. & PHILLIPS, K. M. 2003. A clinical study comparing the three-dimensional accuracy of a working die generated from two dual-arch trays and a complete-arch custom tray. J Prosthet Dent, 90, 228-34. CHIAPASCO, M., ABATI, S., ROMEO, E. & VOGEL, G. 2001. Implant-retained mandibular overdentures with Branemark System MKII implants: a prospective comparative study between delayed and immediate loading. Int J Oral Maxillofac Implants, 16, 537-46. CUNE, M., BURGERS, M., VAN KAMPEN, F., DE PUTTER, C. & VAN DER BILT, A. 2010. Mandibular overdentures retained by two implants: 10-year results from a crossover clinical trial comparing ball-socket and bar-clip attachments. Int J Prosthodont, 23, 310-7. CUNE, M., VAN KAMPEN, F., VAN DER BILT, A. & BOSMAN, F. 2005. Patient satisfaction and preference with magnet, bar-clip, and ball-socket retained mandibular implant overdentures: a cross-over clinical trial. Int J Prosthodont, 18, 99-105. CUNE, M. S., VAN KAMPEN, F. M. & VAN DER BILT, A. 2006. [Patient satisfaction with different types of implant-retained overdentures in the edentate mandible]. Ned Tijdschr Tandheelkd, 113, 401-7. DE ALBUQUERQUE JUNIOR, R. F., LUND, J. P., TANG, L., LARIVEE, J., DE GRANDMONT, P., GAUTHIER, G. & FEINE, J. S. 2000. 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Patient satisfaction with two designs of implant supported removable overdentures; ball attachment and magnets. Clin Oral Implants Res, 20, 1293-8. ELLIS, J. S., THOMASON, J. M., JEPSON, N. J., NOHL, F., SMITH, D. G. & ALLEN, P. F. 2008. A randomized-controlled trial of food choices made by edentulous adults. Clin Oral Implants Res, 19, 356-61. EMAMI, E., ALLISON, P. J., DE GRANDMONT, P., ROMPRE, P. H. & FEINE, J. S. 2010. Better oral health related quality of life: type of prosthesis or psychological robustness? J Dent, 38, 232-6. ESFANDIARI, S., LUND, J. P., THOMASON, J. M., DUFRESNE, E., KOBAYASHI, T., DUBOIS, M. & FEINE, J. S. 2006. Can general dentists produce successful implant overdentures with minimal training? J Dent, 34, 796-801. FARTASH, B., TANGERUD, T., SILNESS, J. & ARVIDSON, K. 1996. Rehabilitation of mandibular edentulism by single crystal sapphire implants and overdentures: 3-12 year results in 86 patients. A dual center international study. Clin Oral Implants Res, 7, 220-9. FEINE, J., HARRISON, J. & HUTCHINS, M. 1997. A clinical trial of implant prostheses: performance and preference. J Gt Houst Dent Soc, 69, 31-2. FEINE, J. S., DE GRANDMONT, P., BOUDRIAS, P., BRIEN, N., LAMARCHE, C., TACHE, R. & LUND, J. P. 1994a. Within-subject comparisons of implant-supported mandibular prostheses: choice of prosthesis. J Dent Res, 73, 1105-11. FEINE, J. S., MASKAWI, K., DE GRANDMONT, P., DONOHUE, W. B., TANGUAY, R. & LUND, J. P. 1994b. Within-subject comparisons of implant-supported mandibular prostheses: evaluation of masticatory function. J Dent Res, 73, 1646-56. FELDMANN, I., LIST, T., FELDMANN, H. & BONDEMARK, L. 2007. Pain intensity and discomfort following surgical placement of orthodontic anchoring units and premolar extraction: a randomized controlled trial. Angle Orthod, 77, 578-85. GARFINKLE, J. S., CUNNINGHAM, L. L., JR., BEEMAN, C. S., KLUEMPER, G. T., HICKS, E. P. & KIM, M. O. 2008. Evaluation of orthodontic mini-implant anchorage in premolar extraction therapy in adolescents. Am J Orthod Dentofacial Orthop, 133, 642-53. GARRETT, N. R., KAPUR, K. K., HAMADA, M. O., ROUMANAS, E. D., FREYMILLER, E., HAN, T., DIENER, R. M., LEVIN, S. & CHEN, T. 1998. A randomized clinical trial comparing the efficacy of mandibular implant-supported overdentures and conventional dentures in diabetic patients. Part II. Comparisons of masticatory performance. J Prosthet Dent, 79, 632-40. GEERTMAN, M. E., BOERRIGTER, E. M., VAN'T HOF, M. A., VAN WAAS, M. A., VAN OORT, R. P., BOERING, G. & KALK, W. 1996a. Two-center clinical trial of implant-retained mandibular overdentures versus complete dentures-chewing ability. Community Dent Oral Epidemiol, 24, 79-84. GEERTMAN, M. E., BOERRIGTER, E. M., VAN 'T HOF, M. A., VAN WAAS, M. A., VAN OORT, R. P., KWAKMAN, J. M., BOERING, G. & KALK, W. 1998. [Overdenture prostheses on implants versus complete dentures]. Ned Tijdschr Tandheelkd, 105, 174-7. 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