Fig. 1

Preoperative X ray

Patient presented to the clinic with deep decays on the distal aspect of tooth 15 not visible clinically

Primary root canal treatment is scheduled

Fig. 2

Treatment planing to restore this maxillary first premolar includes first a root canal retreatment.

X-rays during RC treatment: Master cones and Post operative down pack Xrays taken the day of the treatment.

Video of the procedure

Fig. 3

Post Operative Xrays taken after core build up with 2 purple Dentoclic fiber post 1mm in diameter.

Patient was referred after for crown preparation.


In summary, Itena Clinical resin core build up kit is user friendly and with great working time before setting allowing an easy and hustle free build up. One millimeter diameter fiber posts can provide excellent restoration results with conservative build ups without any extra enlargement. Adequate steps for dentine or enamel preparation before and during bonding should be carried out for optimum result. Moreover, like in this case post were convergent in direction to the access cavity hence preserving more healthy dentine tissue. Finally, the clinician should respect all stages of the adhesive techniques taking special care for the time frame during etching and bonding of the tooth structures.


Bhuva B, Giovarruscio M, Rahim N, Bitter K, Mannocci F. The restoration of root filled teeth: a review of the clinical literature. Int Endod J. 2021 Apr;54(4):509-535. doi: 10.1111/iej.13438. Epub 2021 Jan 5. PMID:33128279.

Figueiredo FE, Martins-Filho PR, Faria-E-Silva AL. Do metal post-retained restorations result in more root fractures than fiber post-retained restorations? A systematic review and meta-analysis. J Endod. 2015 Mar;41(3):309-16.  doi: 10.1016/j.joen.2014.10.006. Epub 2014 Nov 11. PMID: 25459568. 

Tay, F. R., & Pashley, D. H. (2007). Monoblocks in Root Canals: A Hypothetical or a Tangible Goal. Journal of Endodontics, 33(4), 391–398. doi:10.1016/j.joen.2006.10.00

Scotti, N., Forniglia, A., Bergantin, E., Paolino, D. S., Pasqualini, D., & Berutti, E. (2013). Fibre post adaptation and bond strength in oval canals. International Endodontic Journal, 47(4), 366–372. doi:10.1111/iej.12156

Dietschi D, Duc O, Krejci I, Sadan A. Biomechanical considerations for the restoration of endodontically treated teeth: a systematic review of the literature. Part II: evaluation of fatigue behavior, interfaces, andin vivo studies. Quintessence Int 2008;39:117—29.