APEX® Paste

Product Category

Dentistry and Endodontics

Product Description

Paste based on calcium hydroxide with radiopaque contrast

Application

Calcium hydroxide-based paste with strongly alkaline reaction, ready for immediate use. Radiopaque contrast agent for X-rays. Particularly recommended for:

• indirect pulp capping in the treatment of deep caries;
• direct pulp capping in case of pulp exposure or injury, as well as during partial or complete pulp amputation;
• temporary filling of root canals in teeth with periapical inflammation, also in case of infected canals;
• temporary filling of root canals with incomplete development;
• as an insert in the pulp chamber of an endodontically treated tooth after bleaching its crown;
• as an insert in teeth with internal resorption.

Instructions for Use

Before application, a small amount of paste should be expressed to equalize the pressure in the syringe and ensure proper flow of the preparation through the needle.

Indirect and Direct Pulp Capping

After thorough cleaning and drying of the cavity, apply the paste in a thin layer and leave to dry or dry with an air stream (apply the paste to the exposure site or to the bottom of the cavity near the pulp). If necessary, remove excess paste. The base cement is applied directly to the paste layer. The base should be placed gently so as not to displace the calcium hydroxide paste.

Root Canal Filling

Prepare the canal, then flush it with solutions commonly used during canal preparation: e.g. sodium hypochlorite and chelators (citric acid or EDTA) according to the principles of endodontic treatment, then dry. The canal should be completely filled (using a Lentulo needle), overfilling should be avoided. Remove any excess paste. Seal the cavity in the crown completely. When using the paste for temporary filling of root canals in teeth with periapical inflammation, it is recommended to leave the paste in the canal for 1-3 weeks.

Insert in the Pulp Chamber of an Endodontically Treated Tooth after Bleaching Its Crown

Introduce the paste into the pulp chamber, place a cotton pellet and seal the cavity completely. Leave the paste for approximately 7 to 14 days, then remove.

Insert in Teeth with Internal Resorption

After chemo-mechanical preparation of the canal and removal of the granulation tissue causing the resorption, dry the pulp chamber, then completely fill the canal and resorption cavity with the preparation by applying it directly from the syringe equipped with an applicator. Then completely fill the cavity. After 1-3 weeks, carefully remove the paste from the canal (e.g. by copious irrigation and activation with ultrasound) and after drying, finally fill.

Technical Tips: Before final canal filling, the paste should be carefully removed. Any hardened paste can be crushed by introducing a K-file to the full working length. Paste that is too thick can be thinned with distilled water or an aqueous suspension of calcium hydroxide.

Mode of Action

APEX® Paste is a calcium hydroxide preparation with strongly alkaline reaction (pH 12.5±0.5). The appropriately selected chemical composition ensures rapid formation of secondary and reparative dentin. The advantage of this product is, above all, its long-lasting action in stimulating the formation of mineralized barriers. It also has a drying effect, which is of great importance in cases of persistent inflammatory exudates in the canal. Once the product is placed in the canal, there is prolonged release of Ca2+ and OH- ions.

Storage Conditions

Store in tightly closed packaging. Do not store in a refrigerator. Store in a place inaccessible to children. Store at a temperature of 15ºC to 25ºC. Protect from direct sunlight.

After opening the packaging, the shelf life does not change, provided that the packaging is tightly closed again after each use of the product.

Any serious incident related to the product should be reported to the manufacturer and the competent authority (President of the Office for the Registration of Medicinal Products, Medical Devices and Biocidal Products).

UPDATED: 03.2026