CAVEX
Cavex Outline Zinc Oxide Eugenol Free Impression Paste 140 gr white paste + 65 gr blue pasteg
Very low stock (8 units)Regular price LE 1,350.00 EGPUnit price /Unavailable-
prevest Denpro
Prevest Hiflex Impression Paste Zinc Oxide Eugenol Based Impression Paste
Very low stock (6 units)Regular price LE 860.00 EGPUnit price /Unavailable-
How to Choose the Right Zinc Oxide Impression Paste for Your Practice
- ZOE vs. Eugenol-Free Formulation — Traditional ZOE pastes use eugenol (clove oil) as the accelerator, which may cause tissue irritation or sensitisation in eugenol-allergic patients. Eugenol-free alternatives (e.g. Cavex Outline) substitute non-phenol accelerators, producing equivalent accuracy without the sensitisation risk — essential for clinics serving diverse patient populations in Egypt.
- Two-Component Paste Ratio — All ZNO pastes are dispensed as equal lengths of base (zinc oxide) and accelerator paste mixed on a paper pad. The standard ratio is 1:1 by length; deviating from this ratio alters working time and set hardness. Use a clean mixing spatula per mix to prevent cross-contamination between components.
- Working Time and Setting Time — At 23°C, most ZNO pastes offer 2–3 minutes of working time and set within 5–7 minutes total. Egyptian summer ambient temperatures of 35–40°C accelerate the setting reaction by 30–50%. Use a cooled glass slab and work quickly in air-conditioned conditions to maintain adequate manipulation time.
- Consistency and Flow — ZNO impression paste is a light-bodied wash material. It captures fine mucosal detail and border anatomy when used over a close-fitting custom acrylic tray with adhesive. It is not suitable as a primary impression tray material — confine use to wash impressions over functional custom trays.
- Tray Adhesive Requirement — ZNO paste does not adhere chemically to acrylic or metal trays. A dedicated ZOE tray adhesive (applied 10 minutes before impression) is mandatory to prevent paste separation from the tray during removal and distortion of the final impression.
- Dimensional Stability — ZNO impression paste is dimensionally stable and can be poured immediately or stored for 24–48 hours before pouring dental stone without significant distortion. This makes it suited to Egyptian clinics where the lab turnaround may not be same-day.
ZNO Impression Paste Types at a Glance
| Property | ZOE-Based (e.g. Prevest Hiflex) | Eugenol-Free (e.g. Cavex Outline) |
|---|---|---|
| Accelerator | Eugenol (clove oil) | Non-phenol organic acid |
| Eugenol-sensitive patients | Contraindicated | Safe for all patients |
| Working time at 23°C | 2–3 min | 2–3 min |
| Setting time at 23°C | 5–7 min | 5–7 min |
| Detail reproduction | Excellent | Excellent |
| Compatibility with resin provisional | May inhibit polymerisation | No inhibition |
Availability & Delivery in Egypt
MedSTA stocks both ZOE-based and eugenol-free ZNO impression paste brands priced in EGP, with delivery across Cairo, Giza, Alexandria, and all Egyptian governorates within 1–3 business days. Products are stored in climate-controlled conditions to prevent accelerator evaporation during Egyptian summer months. Authentic, sealed packaging from authorised distributors only.
Frequently Asked Questions
What is zinc oxide eugenol (ZOE) impression paste and when is it used?
What is zinc oxide eugenol (ZOE) impression paste and when is it used?
Zinc oxide eugenol (ZOE) impression paste is a two-component wash impression material consisting of a zinc oxide base paste and a eugenol-containing accelerator paste. It is indicated for final wash impressions of edentulous and partially dentulous ridges over close-fitting custom acrylic trays, where its low viscosity captures fine mucosal detail and border anatomy required for accurate complete or partial denture construction.
What is the difference between ZOE-based and eugenol-free ZNO impression pastes?
What is the difference between ZOE-based and eugenol-free ZNO impression pastes?
ZOE-based pastes use eugenol as the accelerator, which can cause tissue sensitisation or irritation in eugenol-allergic patients and may inhibit the polymerisation of resin-based provisionals placed subsequently. Eugenol-free alternatives (such as Cavex Outline) replace eugenol with a non-phenol organic acid accelerator, producing clinically equivalent setting time, detail reproduction, and dimensional stability without sensitisation risk, making them safer for a wider range of patients.
How do I control working time with ZNO impression paste in Egypt's hot climate?
How do I control working time with ZNO impression paste in Egypt's hot climate?
Egyptian summer temperatures of 35–40°C accelerate ZNO paste setting by 30–50% compared to the 23°C manufacturer data. To extend working time: pre-cool the glass mixing slab in a refrigerator for 15 minutes before use, work in an air-conditioned clinical environment, reduce the length of accelerator paste slightly relative to the base, and mix on a cooler portion of the pad. Avoid mixing in direct sunlight or near dental unit light heat sources.
Can ZNO impression paste be used in patients with eugenol sensitivity?
Can ZNO impression paste be used in patients with eugenol sensitivity?
Standard ZOE impression paste is contraindicated in patients with confirmed or suspected eugenol allergy, as direct mucosal contact with eugenol can trigger contact stomatitis, burning, and tissue ulceration. In these patients, use a eugenol-free ZNO impression paste (e.g. Cavex Outline) which substitutes the eugenol accelerator with a non-sensitising organic acid, providing equivalent impression quality without the sensitisation risk.
What type of tray should I use with ZNO impression paste?
What type of tray should I use with ZNO impression paste?
ZNO impression paste is a light-bodied wash material designed exclusively for use over a close-fitting custom acrylic or shellac resin tray. The tray must be coated with a dedicated ZOE-compatible tray adhesive at least 10 minutes before the impression to ensure mechanical retention of the paste to the tray surface. Stock trays are not appropriate, as the large space between tray and ridge produces a thick paste layer that distorts upon removal and lacks border seal. Does MedSTA supply ZNO impression paste across Egypt? Yes, MedSTA delivers to all Egyptian governorates within 1–3 business days.