Dental prosthetics

• Destruction of a tooth or part of it
• Absence of one or more teeth
• Correction of shape, size, and color of teeth
• Increased wear of teeth
• As a splint for mobile teeth
• Installed implant

Crowns are installed on teeth when they are destroyed or significantly damaged. Veneers are used to correct aesthetic defects of the front teeth. Inlays and onlays are used to restore parts of teeth that have been destroyed by caries or trauma, or in cases of pathological wear. Bridge prostheses are used when one or more teeth are missing or for splinting mobile teeth.

At iStomatolog dental clinic in Kyiv, we manufacture all types of metal-free constructions. We use materials such as lithium disilicate (E.max), zirconium dioxide (zirconia crowns), feldspathic ceramic, glass ceramic, hybrid ceramic, and ceramic composite for making crowns. Lithium disilicate (E.max) is used for making veneers, inlays, and onlays, along with feldspathic ceramic, glass ceramic, hybrid ceramic, and ceramic composite. Bridge prostheses can be made entirely of zirconium dioxide with customization using special dyes or with ceramic applied to a zirconia frame.

1. Diagnosis using X-rays or CT scans. Determination of the need for treatment or retreatment of root canals. The tooth root is the foundation, and how long the tooth with the crown will last depends directly on the quality of the treated canals.
2. Preparation of root canals and sealing with special pastes. In cases of difficult-to-reach root canals, poorly sealed canals, or broken instruments, retreatment is performed under microscope control.
3. Manufacturing of a core buildup - a framework on which the crown will be fixed. The core buildup is made in the clinic and is a titanium or carbon post (glass fiber is not used due to the high risk of breakage) fixed to a special hard material. A properly selected post distributes the chewing load on the tooth root without the risk of fracture.
4. Preparation (trimming) of the core buildup for the chosen type of crown.
5. Intraoral scanning of both jaws using the Cerec Cam camera. Scanning has replaced impression taking. The positive aspects of scanning include the accuracy of the display, the absence of errors, and the ease of tolerating the procedure by the patient (especially in cases of gag reflex).
6. Computer modeling of the crown. During modeling, a crown is created that is identical to the patient's teeth in shape, size, and type of wear. This is why crowns made using digital methods do not require patient adaptation.
7. Color matching according to a special color scale consisting of 26 shades corresponding to the color of natural teeth.
8. Selection of the material from which the crown will be milled.
9. Milling of the crown in the CEREC machine.
10. Polishing of the finished crown. Application of individual features using special dyes.
11. Preparation of the tooth and crown for fixation. A crown made of any type of ceramic is treated with hydrofluoric acid to create ideal conditions for chemical bonding with the tooth. The fragility of ceramic prosthetics is a particular feature until they are fixed to the tooth. After fixation with special composite cements, we obtain a monolithic structure that is several times stronger than tooth tissue.
12. Fixation of the prepared crown.

Covers and inlays made by milling are an ideal alternative to composite resin restoration. When a tooth is severely damaged, it is preferable to create an inlay. With greater durability, a ceramic inlay helps prevent the tooth from breaking. When there is pathological tooth wear and the need to increase the bite height, computer modeling of overlays allows for the most accurate reproduction of all chewing movements and recreating them on the teeth.

Bridge prostheses are used when one or more teeth are missing, as well as to splint mobile teeth in gum disease. At iStomatolog clinic, bridge prostheses are made of zirconium dioxide with individual staining using special dyes or a combination of zirconia and ceramic. Combining zirconia (the framework is made of zirconium dioxide) and ceramics as a facing allows for highly aesthetic constructions that meet modern requirements.

• High structural strength
• Complete biocompatibility with gum and tooth tissue
• Wear that does not significantly exceed the wear of tooth enamel
• Excellent aesthetics
• Ability to make bridge prostheses of any length.

• Inability to install implants or bridgework
• Complete or partial absence of teeth
• As a temporary structure during the integration of implants

A clasp denture is a metal framework with artificial teeth installed on it, which can be secured by clasps or locks. They have a long lifespan (7 years or more), a minimal risk of breakage, excellent fixation in the oral cavity, and minimal patient discomfort and adaptation period. In clasp dentures, special clasps or brackets made of metal or acetate are used to stabilize and provide additional fixation to the prosthesis in the oral cavity. Lock-type dentures are fixed to the crowns of the teeth using a lock mechanism, which consists of two parts, one of which is located in the denture and the other on the tooth crown. The downside of lock-type dentures is the need to crown the end teeth. However, the fixation of the denture with a lock mechanism is the most stable to any movement.

Acetal (as well as nylon) dentures have slight flexibility in the oral cavity, allowing them to fit better to the tissues.

Acrylic or plastic dentures are made entirely of plastic with artificial teeth installed on them. The lifespan of such dentures is 2-5 years, and the likelihood of breakage is much higher than that of clasp dentures. The fixation of such dentures in the case of bone tissue atrophy of the jaws is not as effective.

• Taking impressions of the jaws (when there are no teeth present and an acrylic prosthesis is being made, an individual tray is also required to take the impression)
• Determining the central relationship of the jaws on a wax template
• Fitting the prosthesis base (artificial teeth are installed on a wax base at this fitting stage)
• Patient education on how to use the prosthesis (insertion and removal of the prosthesis, prosthesis care)
• Prosthesis adjustment (may be done several times with a 3-5 day interval)

During the first week after installation of the removable denture, the patient may experience increased salivation, possible speech impairment, discomfort when swallowing (especially pronounced with acrylic dentures on the upper jaw), increased gag reflex, and unsatisfactory fixation of the prosthesis in the oral cavity. In most cases, all of these symptoms disappear within a couple of weeks.

The main function of any denture is to restore chewing function. Any denture is better than no teeth.