Restoration of Endodontically Treated Teeth: A Review of Direct Restorative Approach

Abstract

Many studies have been conducted on the restorative treatment of endodontically treated teeth, but there is still no consensus. At the same time, restorations of endodontically treated teeth can be very challenging. This article focuses on the characterization of endodontically treated teeth, their pre-restorative assessments and approaches for making more successful restorations with current novel direct restorative materials.

Keywords

• endodontically treated teeth,restorative teeth,resin composites,cuspal coverage,tooth fracture,adhesive dentistry

References

1. Akman, S., Akman, M., Eskitascioglu, G., Belli, S. (2011). Influence of several fibre-reinforced composite restoration techniques on cusp movement and fracture strength of molar teeth. International Endodontic Journal, 44(5), 407–415. Angeletaki, F., Gkogkos, A., Papazoglou, E., Kloukos, D. (2016). Direct versus indirect inlay/onlay composite restorations in posterior teeth. A systematic review and meta-analysis. Journal of Dentistry, 53, 12–21. Aquilino, S. A. and Caplan, D. J. (2002). Relationship between crown placement and the survival of endodontically treated teeth. Journal of Prosthetic Dentistry, 87(3), 256–263.
2. Assif, D., Bitenski, A., Pilo, R., Oren, E. (1993). Effect of post design on resistance to fracture of endodontically treated teeth with complete crowns. The Journal of Prosthetic Dentistry, 69(1), 36–40.
3. Ausiello, P., De Gee, A. J., Rengo, S., Davidson, C. L. (1997). Fracture resistance of endodontically-treated premolars adhesively restored. American Journal of Dentistry, 10(5), 237–241.
4. Ayna, B., Ayna, E., Çelenk, S. (2010). Endodontic and prosthetic treatment of teeth with periapical lesions in a 16-year-old-girl. Journal of Applied Oral Science, 18(2), 201–206.
5. Baraban, D. J. (1972). Immediate restoration of pulpless teeth. The Journal of Prosthetic Dentistry, 28(6), 607–612. Doi: 10.1016/0022-3913(72)90109-6
6. Baratieri, L. N., De Andrada, M. A. C., Arcari, G. M., Ritter, A. V. (2000). Influence of post placement in the fracture resistance of endodontically treated incisors veneered with direct composite. Journal of Prosthetic Dentistry, 84(2), 180–184.
7. Belleflamme, M. M., Geerts, S. O., Louwette, M. M., Grenade, C. F., Vanheusden, A. J., Mainjot, A. K. (2017). No post-no core approach to restore severely damaged posterior teeth: an up to 10-year retrospective study of documented endocrown cases. Journal of Dentistry, 63, 1–7.
8. Belli, S., Erdemir, A., Ozcopur, M., Eskitascioglu, G. (2005). The effect of fibre insertion on fracture resistance of root filled molar teeth with MOD preparations restored with composite. International Endodontic Journal, 38(2), 73–80.

9. Belli, S., Erdemir, A., Yildirim, C. (2006). Reinforcement effect of polyethylene fibre in root-filled teeth: comparison of two restoration techniques. International Endodontic Journal, 39(2), 136–142.
10. Belli, S., Cobankara, F. K.,Eraslan, O.,Eskitascioglu, G.,Karbhari, V. (2006). The effect of fiber insertion on fracture resistance of endodontically treated molars with MOD cavity and reattached fractured lingual cusps. Journal of Biomedical Materials Research-Part B Applied Biomaterials, 79(1), 35–41. Doi: 10.1002/jbm.b.30508
11. Belli, S., Eraslan, O., Eskitascioglu, G. (2015). Direct restoration of endodontically treated teeth: a brief summary of materials and techniques. Current Oral Health Reports, 2(4), 182–189.
12. Sorensen, J. A. and Martinoff, J. T. (1984). Intracoronal reinforcement and coronal coverage: a study of endodontically treated teeth. The Journal of Prosthetic Dentistry, 51(6), 780–784.
13. Stampalia, L. L., Nicholls, J. I., Brudvik, J. S., Jones, D. W. (1986). Fracture resistance of teeth with resin-bonded restorations. The Journal of Prosthetic Dentistry, 55(6), 694–698.
14. Reeh, E. S., Messer, H. H., Douglas, W. H. (1989). Reduction in tooth stiffness as a result of endodontic and restorative procedures. Journal of Endodontics, 15(11), 512–516.
15. Rickert, U. G., Dixon, C. M. (1931). The controlling of root surgery. In FDI 8me Congres Dentaire Internationale. Compte Rendu General Section IIIa, Paris, 15–22. Sakaguchi, R. L., Powers, J. M. (2012). Craig’s restorative dental materials. Mosby.
16. Moorthy, A., Hogg, C. H., Dowling, A. H., Grufferty, B. F., Benetti, A. R., Fleming, G. J. (2012). Cuspal deflection and microleakage in premolar teeth restored with bulk-fill flowable resin-based composite base materials. Journal of Dentistry, 40(6), 500–505. Doi: 10.1016/j.jdent.2012.02.015.
17. Nagasiri, R., Chitmongkolsuk, S. (2005). Long-term survival of endodontically treated molars without crown coverage: a retrospective cohort study. The Journal of Prosthetic Dentistry, 93(2), 164–170.
18. Mannocci, F., Qualtrough, A. J. E., Worthington, H. V., Watson, T. F., Pitt, F. T. R. (2005). Randomized clinical comparison of endodontically treated teeth restored with amalgam or with fiber posts and resin composite: five-year results. Operative Dentistry, 30(1), 9–15.
19. Mannocci, F., Bertelli, E., Sherriff, M., Watson, T. F., Ford, T. R. P. (2002). Three-year clinical comparison of survival of endodontically treated teeth restored with either full cast coverage or with direct composite restoration. Journal of Prosthetic Dentistry, 88(3), 297–301.
20. Garoushi, S., Vallittu, P. K., Lassila, L. V. (2007). Short glass fiber reinforced restorative composite resin with semi-ınter penetrating polymer network matrix. Dental materials, 23(11), 1356–1362.
21. Garoushi, S., Vallittu, P. K., Watts, D. C., Lassila, L. V. (2008). Polymerization shrinkage of experimental short glass fiber-reinforced composite with semi-inter penetrating polymer network matrix. Dental materials : official publication of the Academy of Dental Materials, 24(2), 211-215. Doi: 10.1016/j.dental.2007.04.001
22. Dietschi, D., Duc, O., Krejci, I., Sadan, A. (2007). Biomechanical considerations for the restoration of endodontically treated teeth: a systematic review of the literature--Part 1. Composition and micro- and macrostructure alterations. Quintessence International (Berlin, Germany: 1985), 38(9), 733–743.
23. Dietschi D., Bouillaguet S., Sadan A. (2011). Restoration of the endodontically treated tooth. In: Hargreaves K. M., Cohen, S., editors. Cohen’s pathways of the pulp. 10th ed. St. Louis (MO): Mosby Elsevier, p777-807.
24. Bianchi E Silva, A. A., Ghiggi, P. C., Mota, E. G., Borges, G. A., Burnett, L. H., Spohr, A. M. (2013). Influence of restorative techniques on fracture load of endodontically treated premolars. Stomatologija, 15(4), 123–128.
25. Bitter, K., Meyer-Lueckel, H., Fotiadis, N., Blunck, U., Neumann, K., Kielbassa, A. M., Paris, S. (2010). Influence of endodontic treatment, post insertion, and ceramic restoration on the fracture resistance of maxillary premolars. International Endodontic Journal, 43(6), 469–477. Doi: 10.1111/j.1365-2591.2010.01701.x.
26. Braga, R. R, Ferracane, J. L. (2004). Alternatives in polymerization contraction stress management. Critical reviews in oral biology and medicine: an official publication of the American Association of Oral Biologists, 15(3), 176–184.
27. Cagidiaco, M. C., Radovic, I., Simonetti, M., Tay, F., Ferrari, M. (2007). Clinical performance of fiber post restorations in endodontically treated teeth: 2-year results. The International Journal of Prosthodontics, 20(3), 293–298.
28. Carvalho, M. A., Lazari, P. C., Gresnigt, M., Del Bel Cury, A. A., Magne, P. (2018). Current options concerning the endodontically-treated teeth restoration with the adhesive approach. Brazilian Oral Research, 32(suppl 1), e74. Doi: 10.1590/1807-3107bor-2018.vol32.0074.
29. Chan, C. P., Chun, L. P., Tseng, S. C., Jeng, H. (1999). Vertical root fracture in endodontically versus nonendodontically treated teeth. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 87(4), 504–507.
30. Cheung, G. S. P. and Chan, T. K. (2003). Long-term survival of primary root canal treatment carried out in a dental teaching hospital. International Endodontic Journal, 36(2), 117–128.
31. Cho, G. C., Kaneko, L. M., Donovan, T. E., White, S. N. (1999). Diametral and compressive strength of dental core materials. The Journal of Prosthetic Dentistry, 82(3), 272–276.
32. Christensen, G. J. (2012). The case for onlays versus tooth-colored crowns. Journal of the American Dental Association (1939), 143(10), 1141–1144.
33. Costa, L. C., Pegoraro, L. F., Bonfante, G. (1997). Influence of different metal restorations bonded with resin on fracture resistance of endodontically treated maxillary premolars. The Journal of Prosthetic Dentistry, 77(4), 365–369.
34. da Veiga, A. M. A., Cunha, A. C., Ferreira, D. M. T. P., da Silva Fidalgo, T. K., Chianca, T. K., Reis, K. R., Maia, L. C. (2016). Longevity of direct and indirect resin composite restorations in permanent posterior teeth: a systematic review and meta-analysis. Journal of Dentistry, 54, 1–12.
35. Dammaschke, T., Nykiel, K., Sagheri, D., Schäfer, E. (2013). Influence of coronal restorations on the fracture resistance of root canal-treated premolar and molar teeth: a retrospective study. Australian Endodontic Journal, 39(2), 48–56.
36. Dayangac, G. B. (2011). Kompozit restorasyonlar. İstanbul: Quintessence Yayıncılık.
37. van Dijken, J. W., Sunnegårdh-Grönberg, K. (2006). Fiber-reinforced packable resin composites in class II cavities. Journal of Dentistry, 34(10), 763–769. Doi: 10.1016/j.jdent.2006.02.003
38. Eick, J. D., Kostoryz, E. L., Rozzi, S. M., Jacobs, D. W., Oxman, J. D., Chappelow, C. C., Glaros, A. G., Yourtee, D. M. (2002). In vitro biocompatibility of oxirane/polyol dental composites with promising physical properties. Dental Materials, 18(5), 413–421. Doi: 10.1016/s0109-5641(01)00071-9
39. El-Damanhoury, H. M., Platt, J. (2014). Polymerization shrinkage stress kinetics and related properties of bulk-fill resin composites. Operative Dentistry, 39(4), 374–382.
40. El-Safty, S., Silikas, N., Watts, D. C. (20128. Creep deformation of restorative resin-composites intended for bulk-fill placement. Dental Materials, 28(8), 928–935. Doi: 10.1016/j.dental.2012.04.038
41. ElAyouti, A., Serry, M. I., Geis-Gerstorfer, J., Löst, C. (2011). Influence of cusp coverage on the fracture resistance of premolars with endodontic access cavities. International Endodontic Journal, 44(6), 543–549.
42. Elderton, R. J. (1988). Restorations without conventional cavity preparations. International Dental Journal, 38(2), 112–118.
43. Ergücü, Z., Türkün, L. S. (2007). Clinical performance of novel resin composites in posterior teeth: 18-month results. The journal of Adhesive Dentistry, 9(2), 209–216.
44. Faria, A. C., Rodrigues, R. C., de Almeida Antunes, R. P., de Mattos Mda, G., Ribeiro, R. F. (2011). Endodontically treated teeth: characteristics and considerations to restore them. Journal of Prosthodontic Research, 55(2), 69–74. Doi: 10.1016/j.jpor.2010.07.003
45. Fennis, W. M., Kuijs, R. H., Roeters, F. J., Creugers, N. H., Kreulen, C. M. (2014). Randomized control trial of composite cuspal restorations: five-year results. Journal of Dental Research, 93(1), 36–41.
46. Fráter, M., Forster, A., Keresztúri, M., Braunitzer, G., Nagy. K. (2014). In vitro fracture resistance of molar teeth restored with a short fibre-reinforced composite material. Journal of Dentistry, 42(9), 1143–1150. Doi: 10.1016/j.jdent.2014.05.004
47. Garapati, S., Das, M., Mujeeb, A., Dey, S., Kiswe, S. P. (2014). Cuspal movement and microleakage in premolar teeth restored with posterior restorative materials. Journal of International Oral Health, JIOH, 6(5), 47–50.
48. Garoushi, S. K., Hatem, M., Lassila, L. V. J., Vallittu, P. K. (2015). The effect of short fiber composite base on microleakage and load-bearing capacity of posterior restorations. Acta Biomaterialia Odontologica Scandinavica, 1(1), 6–12. Doi: 10.3109/23337931.2015.1017576
49. González-López, S., De Haro-Gasquet, F., Vílchez-Díaz, M. A., Ceballos, L., Bravo, M. (2006). Effect of restorative procedures and occlusal loading on cuspal deflection. Operative Dentistry, 31(1), 33–38.
50. Goyal, N., Singh, S., Mathur, A., Makkar, D. K., Aggarwal, V. P., Sharma, A., Kaur, P. (2017). Traumatic dental injuries prevalence and their ımpact on self-esteem among adolescents in India: a comparative study. Journal of Clinical and Diagnostic Research, 11(8), 106–110. Doi: 10.7860/JCDR/2017/27496.10510
51. Göhring, T. N. and Peters, O. A. (2003). Restoration of endodontically treated teeth without posts. American Journal of Dentistry, 16(5), 313–317.
52. Guldener, K. A., Lanzrein, C. L., Siegrist Guldener, B. E., Lang, N. P., Ramseier, C. A., Salvi, G. E. (2017). Long-term Clinical outcomes of endodontically treated teeth restored with or without fiber post–retained single-unit restorations. Journal of Endodontics, 43(2), 188–193.
53. Hansen, E. K. (1988). In vivo cusp fracture of endodontically treated premolars restored with MOD amalgam or MOD resin fillings. Dental Materials : Official Publication of the Academy of Dental Materials, 4(4), 169–173.
54. Hashimoto, M., Ohno, H., Sano, H., Kaga, M., Oguchi, H. (2003). In vitro degradation of resin-dentin bonds analyzed by microtensile bond test, scanning and transmission electron microscopy. Biomaterials, 24(21), 3795–3803.
55. van Heumen, C. C., Kreulen, C. M., Creugers, N. H. (2009). Clinical studies of fiber-reinforced resin-bonded fixed partial dentures: a systematic review. European Journal of Oral Sciences, 117(1), 1–6. Doi: 10.1111/j.1600-0722.2008.00595.x.
56. Ilie, N., Reinhard, H. (2011). Investigations on a methacrylate-based flowable composite based on the SDRTM technology. Dental Materials, 27(4), 348–355. Doi: 10.1016/j.dental.2010.11.014
57. Jiang, W., Bo, H., Yongchun, G., LongXing, N. (2010). Stress distribution in molars restored with inlays or onlays with or without endodontic treatment: a three-dimensional finite element analysis. The Journal of Prosthetic Dentistry, 103(1), 6–12.
58. Kantardzić, I., Vasiljević, D., Blazić, L., Luzanin, O. (2012). Influence of cavity design preparation on stress values in maxillary premolar: a finite element analysis. Croatian Medical Journal, 53(6), 568–576.
59. Krejci, I., Duc, O., Dietschi, D., de Campos, E. (2003). Marginal adaptation, retention and fracture resistance of adhesive composite restorations on devital teeth with and without posts. Operative Dentistry, 28(2), 127–135.
60. Larson, T. D., Douglas, W. H., Geistfeld, R. E. (1981). Effect of prepared cavities on the strength of teeth. Operative Dentistry, 6(1), 2–5.
61. Laske, M., Opdam, N. J. M., Bronkhorst, E. M., Braspenning, J. C. C., Huysmans, M. C. (2016). Longevity of direct restorations in Dutch dental practices. Descriptive study out of a practice based research network. Journal of Dentistry, 46, 12–17.
62. Lewinstein, I., Grajower, R. (1981). Root dentin hardness of endodontically treated teeth. Journal of Endodontics, 7(9), 421–422.
63. Lien, W., Vandewalle, K. S. (2010). Physical properties of a new silorane-based restorative system. Dental Materials, 26(4), 337–344. Doi: 10.1016/j.dental.2009.12.004
64. Lin, C. L., Chang, C. H., Ko, C. C. (2001). Multifactorial analysis of an mod restored human premolar using auto-mesh finite element approach. Journal of Oral Rehabilitation, 28(6), 576–585. Doi: 10.1046/j.1365-2842.2001.00721.x
65. Lin, C. L., Chang, Y. H., Liu, P. R. (2008). Multi-factorial analysis of a cusp-replacing adhesive premolar restoration: a finite element study. Journal of Dentistry, 36(3), 194–203. Doi: 10.1016/j.jdent.2007.11.016
66. Maghaireh, G. A., Taha, N. A., Alzraikat, H. (2017). The silorane-based resin composites: a review. Operative Dentistry, 42(1), E24–34.
67. Magne, P., Lazari, P. C., Carvalho, M. A., Johnson, T., Del Bel Cury, A. A. (2017). Ferrule-effect dominates over use of a fiber post when restoring endodontically treated ıncisors: an in vitro study. Operative Dentistry, 42(4), 396–406. Doi: 10.2341/16-243-L.
68. Magne, P., Goldberg, J., Edelhoff, D., Güth, J. F. (2016). Composite resin core buildups with and without post for the restoration of endodontically treated molars without ferrule. Operative Dentistry, 41(1), 64–75.
69. Magne, P., Belser, U. (2002). Bonded porcelain restorations in the anterior dentition : a biomimetic approach. Quintessence Pub. Co.
70. Magno, M. B., Nascimento, G. C., Rocha, Y. S., Ribeiro, B. D., Loretto, S. C., Maia, L. C. (2016). Silorane-Based composite resin restorations are not better than conventional composites-a meta-analysis of clinical studies. The journal of Adhesive Dentistry, 18(5), 375–386. Doi: 10.3290/j.jad.a36916
71. Makkes, P. C., van Velzen, S. K., Wesselink, P. R., de Greeve, P. C. (1977). Polyethylene tubes as a model for the root canal. Oral Surgery, Oral Medicine, and Oral Pathology, 44(2), 293–300.
72. Manhart, J., Chen, H., Hamm, G., Hickel, R. (2004). Buonocore memorial lecture. Review of the clinical survival of direct and indirect restorations in posterior teeth of the permanent dentition. Operative Dentistry, 29(5), 481–508.
73. Manzoor, S., Mohasi, A., Shabina, S. (2018). Polyethylene fiber reinforced resin as an endodontic post-core and periodontal splint. International Journal of Medical Dentistry, 22(1), 59–62.
74. Marshall, F. J., Messler, M. (1961). The sealing of pulpless teeth evaluated with radioisotopes. J Dent Med, 16, 172–184.
75. Mincik, J., Urban, D., Timkova, S., Urban, R. (2016). Fracture resistance of endodontically treated maxillary premolars restored by various direct filling materials: an in vitro study. International Journal of Biomaterials, 9138945.
76. Mondelli, J., Steagall, L., Ishikiriama, A., de Lima Navarro, M. F., Soares, F. B. (1980). Fracture strength of human teeth with cavity preparations. The Journal of Prosthetic Dentistry, 43(4), 419–422.
77. Mondelli, R. F., Ishikiriama, S. K., de Oliveira Filho, O., Mondelli, J. (2009). Fracture resistance of weakened teeth restored with condensable resin with and without cusp coverage. Journal of Applied Oral Science, 17(3), 161–165. Doi: 10.1590/s1678-77572009000300006
78. Moraschini, V., Fai, C. K., Alto, R. M., Dos Santos, G. O. (2015). Amalgam and resin composite longevity of posterior restorations: a systematic review and meta-analysis. Journal of Dentistry, 43(9), 1043–1050.
79. Mishra, R. G, Sonali, T., Pragya, K. (2017). The effect of cusp capping with composite resin on fracture resistance of premolars with prepared endodontic access cavities: an in vitro study. SRM Journal of Research in Dental Sciences, 8(2), 64.
80. Mohammadi, N., Kahnamoii, M. A., Yeganeh, P. K., Navimipour, E. J. (2009). Effect of fiber post and cusp coverage on fracture resistance of endodontically treated maxillary premolars directly restored with composite resin. Journal of Endodontics, 35(10), 1428–1432. Doi: 10.1016/j.joen.2009.07.010.
81. Mondelli, R. F. et al. (1998). Fracture strength of weakened human premolars restored with amalgam with and without cusp coverage. American Journal of Dentistry, 11(4), 181–184.
82. Monga, P., Sharma, V., Kumar, S. (2009). Comparison of fracture resistance of endodontically treated teeth using different coronal restorative materials: an in vitro study. Journal of Conservative Dentistry, JCD, 12(4), 154–159. Doi: 10.4103/0972-0707.58338.
83. Monterubbianesi, R., Orsini, G., Tosi, G., Conti, C., Librando, V., Procaccini, M., Putignano, A. (2016). Spectroscopic and mechanical properties of a new generation of bulk fill composites. Frontiers Physiology, 7, 652. Doi: 10.3389/fphys.2016.00652
84. Nam, S. H., Chang, H. S., Min, K. S., Lee, Y., Cho, H. W., Bae, J. M. (2010). Effect of the number of residual walls on fracture resistances, failure patterns, and photoelasticity of simulated premolars restored with or without fiber-reinforced composite posts. Journal of Endodontics, 36(2), 297–301.
85. Omer H., Hammouda H., Shalan H., Abdellatif A. (2019). Fracture resistance of puplotomized primary molars restored with various restorative materials. Acta Scientific Dental Sciences, 3(5), 98-104.
86. Opdam N. J., van de Sande F. H., Bronkhorst E., Cenci M. S., Bottenberg P., Pallesen U., Gaengler P., Lindberg A., Huysmans M. C., van Dijken J. W. (2014). Longevity of posterior composite restorations: a systematic review and meta-analysis. Journal of Dental Research, 93(10), 943–9.
87. Oskoee, P. A., Ajami, A. A., Navimipour, E. J., Oskoee, S. S., Sadjadi, J. (2009). The effect of three composite fiber insertion techniques on fracture resistance of root-filled teeth. Journal of Endodontics, 35(3), 413–416. Doi: 10.1016/j.joen.2008.11.027.
88. Palin, W. M., Fleming, G. J., Burke, F. J., Marquis, P. M., Randall, R. C. (2005). The influence of short and medium-term water immersion on the hydrolytic stability of novel low-shrink dental composites. Dental materials, 21(9), 852–863. Doi: 10.1016/j.dental.2005.01.004
89. Pantvisai, P., Messer, H. H. (1995). Cuspal deflection in molars in relation to endodontic and restorative procedures. Journal of Endodontics, 21(2), 57–61. Doi: 10.1016/s0099-2399(06)81095-2
90. Papa, J., Cain, C., Messer, H. H. (1994). Moisture content of vital vs endodontically treated teeth. Dental Traumatology, 10(2), 91–93.
91. Plotino, G., Buono, L., Grande, N. M., Lamorgese, V., Somma, F. (2008). fracture resistance of endodontically treated molars restored with extensive composite resin restorations. The Journal of Prosthetic Dentistry, 99(3), 225–232. Doi: 10.1016/S0022-3913(08)60047-5.
92. Randow, K., Glantz, P. O. (1986). On cantilever loading of vital and non-vital teeth an experimental clinical study. Acta Odontologica Scandinavica, 44(5), 271–277. Doi: 10.3109/00016358609004733
93. Rao, M. S., Shameem, A., Nair, R., Ghanta, S., Thankachan, R. P., Issac, J. K. (2013). Comparison of the remaining dentin thickness in the root after hand and four rotary ınstrumentation techniques: an in vitro study. The Journal of Contemporary Dental Practice, 14(4), 712–717. Doi: 10.5005/jp-journals-10024-1389
94. Reagan, S. E., Schwandt, N. W., Duncanson, M. G. (1989). Fracture resistance of wide-isthmus mesio-occlusodistal preparations with and without amalgam cuspal coverage. Quintessence International (Berlin, Germany : 1985), 20(7), 469–472.
95. Saunders, W. P., Saunders, E. M. (1994). Coronal leakage as a cause of failure in root-canal therapy: a review. Endodontics and Dental Traumatology, 10(3), 105–108.
96. Schirrmeister, J. F., Huber, K., Hellwig, E., Hahn, P. (2009). Four-year evaluation of a resin composite including nanofillers in posterior cavities. The Journal of Adhesive Dentistry, 11(5), 399–404.
97. Scotti, N., Scansetti, M., Rota, R., Pera, F., Pasqualini, D., Berutti, E. (2011). The effect of the post length and cusp coverage on the cycling and static load of endodontically treated maxillary premolars. Clinical Oral Investigations, 15(6), 923–929. Doi: 10.1007/s00784-010-0466-y
98. Scotti, Nicola, Rota, R., Scansetti, M., Paolino, D. S., Chiandussi, G., Pasqualini, D., Berutti, E. (2013). Influence of adhesive techniques on fracture resistance of endodontically treated premolars with various residual wall thicknesses. Journal of Prosthetic Dentistry, 110(5), 376–382.
99. Scotti, N., Eruli, C., Comba, A., Paolino, D. S., Alovisi, M., Pasqualini, D., Berutti, E. (2015). Longevity of class 2 direct restorations in root-filled teeth: a retrospective clinical study. Journal of Dentistry, 43(5), 499–505.
100. Shafiei, F., Memarpour, M., Karimi, F. (2011). Fracture resistance of cuspal coverage of endodontically treated maxillary premolars with combined composite-amalgam compared to other techniques. Operative Dentistry, 36(4), 439–447.
101. Shafiei, F., Tavangar, M. S., Ghahramani, Y., Fattah, Z. (2014). Fracture resistance of endodontically treated maxillary premolars restored by silorane-based composite with or without fiber or nano-ıonomer. The Journal of Advanced Prosthodontics, 6(3), 200–206.
102. Shu, X., Mai, Q. Q., Blatz, M., Price, R., Wang, X. D., Zhao, K. (2018). Direct and indirect restorations for endodontically treated teeth: a systematic review and meta-analysis, IAAD 2017 Consensus Conference Paper. The Journal of Adhesive Dentistry, 20(3), 183–194.
103. Soares, C. J., Santana, F. R., Silva, N. R., Preira, J. C., Pereira, C. A.(2007). Influence of the endodontic treatment on mechanical properties of root dentin. Journal of Endodontics, 33(5), 603–606.
104. Soares, P. V., Santos-Filho, P. C., Gomide, H. A., Araujo, C. A.,Martins, L. R.,Soares, C. J. (2008). Influence of restorative technique on the biomechanical behavior of endodontically treated maxillary premolars. part II: strain measurement and stress distribution. The Journal of Prosthetic Dentistry, 99(2), 114–122.
105. Soares, P. V., Santos-Filho, P. C., Martins, L. R., Soares, C. J. (2008). Influence of restorative technique on the biomechanical behavior of endodontically treated maxillary premolars. part I: fracture resistance and fracture mode. The Journal of Prosthetic Dentistry, 99(1), 30–37.
106. Steele, A., Johnson, B. R. (1999). In vitro fracture strength of endodontically treated premolars. Journal of Endodontics, 25(1), 6–8.
107. Suksaphar, W., Banomyong, D., Jirathanyanatt, T., Ngoenwiwatkul, Y. (2017). Survival rates against fracture of endodontically treated posterior teeth restored with full-coverage crowns or resin composite restorations: a systematic review. Restorative Dentistry & Endodontics, 42(3), 157–167.
108. Sundqvist, G. (1976). Bacteriological studies of the necrotic dental pulpa. Umea Universtiy, Sweden.
109. Tamse, A., Zilburg, I., Halpern, J. (1998). Vertical root fractures in adjacent maxillary premolars: an endodontic-prosthetic perplexity. International Endodontic Journal, 31(2), 127–132.
110. Tayab, T., Shetty, A. (2015). The clinical applications of fiber reinforced composites in all specialties of dentistry an overview. International Journal of Composite Materials, 5(1), 18–24.
111. Torabinejad, M., Ung, B., Kettering, J. D. (1990). In vitro bacterial penetration of coronally unsealed endodontically treated teeth. Journal of Endodontics, 16(12), 566–569.
112. Torabzadeh, H., Ghasemi, A., Dabestani, A., Razmavar, S. (2013). Fracture resistance of teeth restored with direct and indirect composite restorations. Journal of Dentistry, (Tehran, Iran), 10(5), 417–425.
113. Torneck, C. D. (1966). Reaction of rat connective tissue to polyethylene tube implants. I. Oral Surgery, Oral Medicine, and Oral Pathology, 21(3), 379–387.
114. Trope, M., Maltz, D. O., Tronstad, L. (1985). Resistance to fracture of restored endodontically treated teeth. Endodontics and Dental Traumatology, 1(3), 108–111.
115. Türp, J. C., Heydecke, G., Krastl, G., Pontius, O., Antes, G., Zitzmann, N. U. (2007). Restoring the fractured root-canal-treated maxillary lateral incisor: in search of an evidence-based approach. Quintessence International (Berlin, Germany: 1985), 38(3), 179–191.
116. Vallittu, P. K. (2018). An overview of development and status of fiber-reinforced composites as dental and medical biomaterials. Acta Biomaterialia Odontologica Scandinavica, 4(1), 44–55.
117. Varga, J., Matsumura, H., Masuhara, E. (1986). Bonding of amalgam filling to tooth cavity with adhesive resin. Dental Materials Journal, 5(2), 158–164.
118. Wu, M. K, Wesselink, P. R. (1993). Endodontic leakage studies reconsidered. Part I: methodology application and relevance. International Endodontic Journal, 26(1), 37–43.
119. Xie, K. X., Wang, X. Y., Gao, X. J., Yuan, C. Y., Li, J. X., Chu, C. H. (2012). Fracture resistance of root filled premolar teeth restored with direct composite resin with or without cusp coverage. International Endodontic Journal, 45(6), 524–529. Doi: 10.1111/j.1365-2591.2011.02005.x.
120. Yuan, K., Niu, C., Xie, Q., Jiang, W., Gao, L., Huang, Z., Ma, R. (2016). Comparative evaluation of the impact of minimally invasive preparation vs. conventional straight-line preparation on tooth biomechanics: a finite element analysis. European Journal of Oral Sciences, 124(6), 591–596. Doi: 10.1111/eos.12303
121. Zandinejad, A. A., Atai, M., Pahlevan, A. (2006). The effect of ceramic and porous fillers on the mechanical properties of experimental dental composites. Dental Materials, 22(4), 382–387.
122. Zhang, M., Matinlinna, J. P. (2012). E-glass fiber reinforced composites in dental applications. Silicon, 4(1), 73–78.
123. Zimmerli, B., Strub, M., Jeger, F., Stadler, O., Lussi, A. (2010). Composite materials: composition, properties and clinical applications. A literature review. Schweiz Monatsschr Zahnmed,120(11), 972–986.