Rehabilitation of the posterior sector represents one of the greatest challenges in restorative dentistry, especially when a tooth must function as a pillar for a fixed prosthesis. In this clinical case, Dr. Francisco Monzó addresses the restoration of an edentulous area in the upper maxilla (tooth 26), using tooth 27 as the main abutment for a 25–26–27 bridge through a combination of endodontic treatment, fibre post placement and core build-up reconstruction.
Diagnosis and Treatment Planning
The patient presented with a missing tooth in position 26, requiring both functional and aesthetic rehabilitation. Tooth 27, structurally compromised, required prior endodontic treatment in order to ensure its viability as a prosthetic abutment. Treatment planning focused on achieving a stable foundation by prioritising overall structural stability through an adequate ferrule effect and reliable core reconstruction.
Step-by-Step Clinical Procedure
Under rubber dam isolation, endodontic treatment was performed on tooth 27. Once the procedure had been completed, the palatal canal was prepared while preserving the appropriate space for cementation of a fibre glass post. This step is essential to reinforce the internal tooth structure and improve force distribution.
The adhesive sequence was then carried out using materials from Kiyomi Dental, specifically designed to simplify clinical protocols without compromising outcomes:
- Selective enamel etching with K-Etch 37%, a highly effective phosphoric acid etchant that ensures optimal micromechanical retention on peripheral enamel.
- Application of K-Bond Universal+, a universal adhesive distinguished by excellent wettability, high bond strength and compatibility with multiple techniques (total-etch, selective-etch or self-etch).
- Core reconstruction using Dual Cem Core, a dual-cure composite with high mechanical resistance, ideal for build-ups in endodontically treated teeth.
Advantages of Kiyomi Dental Materials
The combined use of these products enables clinicians to achieve a cohesive, optimised and highly predictable restorative system. Compared to other solutions available on the market, Kiyomi Dental stands out by offering materials that balance ease of use with clinical performance:
- K-Etch 37% provides uniform and controlled etching, facilitating durable adhesion without over-etching.
- K-Bond Universal+ offers versatility and reliability, reducing technique sensitivity and improving restoration longevity.
- Dual Cem Core combines high compressive strength with easy handling, enabling stable reconstructions even in cases with extensive structural loss.
Outcome and Conclusion
The final result is a solid core build-up that optimises the surrounding ferrule effect, significantly improving the tooth’s resistance to functional loads. This stability is essential to ensure the long-term success of prosthetic rehabilitation in the posterior sector.
This clinical case demonstrates how, through proper planning and the use of suitable materials, it is possible to restore functionality and durability to compromised teeth. At Kiyomi Dental, the objective is clear: to provide solutions that allow clinicians to achieve excellence in a simple, reliable and predictable way.


