3M ESPE User Manual

Exclusively Distributed by 3M ESPE

Celara™ Denture System

Celara Denture System

Training Manual

Table of Contents

Introduction: The Celara Denture System .....................................................................................3

Replacing a Patient’s Existing Denture ....................................................................................3–15

“Why Start from Scratch?” ....................................................................................................3

Making “Excellent” Final Impressions ................................................................................ 4–5

Suggestions When Using the Dentures as Trays for Final Impressions ....................................6

Evaluating “Records” from Impressions ..............................................................................7– 8

Boxing Impressions and Pouring Casts ............................................................................. 8 –11

Fabricating the Wax Pattern in the Dental Office ............................................................ 12–14

Sending the Container to the Laboratory to Have the Laboratory Inject the Wax Pattern ....... 15

Introduction

Congratulations, and welcome to the Celara™ Denture System! The Celara System was developed to
help dental professionals to successfully treat the expanding population of denture patients.

Traditional denture techniques are lengthy, cumbersome and often lead to unpredictable results. In
addition, over the last several years, denture training is being de-emphasized in dental schools. The
bottom line is that fewer dentists would like to treat denture cases, while the demand for denture
treatment is increasing.

The Celara Denture System started with replacing a patient’s existing denture and has evolved
into many other applications; such as: New Dentures, Spare Dentures, and Implant Retained
Dentures. The Celara Denture System is your solution to your removable cases.

Replacing a Patient’s Existing Denture

“Why Start From Scratch?”

It is accepted practice that patients should have their complete dentures replaced every 5–7 years
to compensate for shrinkage of the ridges and the wear of the teeth. Making a new denture for
existing denture wearers can be one of the most challenging procedures dentists can perform.
Why? Patients often have trouble adapting and adjusting to the new denture — especially
when the dentist starts from scratch — when few, if any, attributes of the old dentures can be
adequately communicated to the laboratory. The Celara Denture Technique enables dentists to
routinely fabricate dentures in three simple appointments with better patient satisfaction and fewer
adjustments. This is all accomplished with precise communication between the patient, the doctor,
and the dental laboratory.

Figure 1: Celara Refill Kit.
Everything is conveniently packaged
and pre-measured.

• Rapid Repair Tabs —to extend the
borders or repair broken flanges

• Celara Disposable Container — for
boxing the impression

• Celara Extended Pour Alginate

• Celara Quick Setting Stone with
Water Measure

• Celara Laboratory Bag

3

Figure 2A

Making “Excellent” Final Impressions

The Existing Denture Makes an Excellent Tray for the Final Impression

• It has borders which the patient is accustomed to

• The occlusion can help orient the tray back into the mouth correctly

• The old denture usually fits loosely, creating an even thickness of impression material

With today’s modern materials, it is not necessary to grind out undercuts or drill relief holes
through the old denture. With the Celara™ Denture Technique, doctors can use their preferred
impression material and techniques. The following two-stage impression technique is

strongly recommended:

Two Stage Impression Technique — Stage 1:

1. Scrub the denture with pumice and water.

2. Evaluate the border extensions —if the critical areas are short, they can be extended using
the Celara Rapid Repair Tabs. It is not recommended to use the Rapid Repaid Tabs over the
entire denture borders as is typically done with a custom tray. They are used only on the
borders which are critical to the fit — the posterior tuberosity areas and posterior border of the
maxillary denture and retromolar pad and buccal shelf of the mandibular denture (Figure 2A). It
is best to maintain the other borders of the denture as these borders are not critical to the fit,
and they are what the patient is used to. This is one of the strongest rationales for using the
denture as a custom tray. If the flange is broken, it is easily repaired using Celara Rapid Repair
Tab s (Figure 2B). Rapid Repair Tabs are not used in every case.

Figure 2B

Figure 3

3. Apply appropriate adhesive liberally around the borders only. It is not necessary
or recommended, to apply the adhesive around the entire tissue surface of the
denture (Figure 3).

It greatly expedites the clean up when adhesive is not applied over the entire tissue surface. Further,
in the event an impression is missed, the impression material over the palate or crest of the ridge
can easily be cut away with a dull knife, enabling a new impression to be made.

4. Apply heavy body polyvinylsiloxane around the borders of the denture, insert the denture in
the mouth and border mold.

4

When fabricating upper and lower dentures, it is best to make the impressions simultaneously with
the teeth lightly in occlusion. Always insert the maxillary denture first, making sure it is completely
seated, and do an open-mouth border molding technique for the posterior border — picking up
the hannular notches and posterior tuberosity areas. Simply have the patient open very wide
and move the jaw side to side to establish the thickness of the posterior tuberosity areas. With
the mandibular denture, you want a “closed mouth” border molding technique; after you insert
the denture, have the patient lift his/her tongue to record the sublingual frenulum and sublingual
mylohyoid area— floor of the mouth.

Remove the dentures after the impression material sets and carefully trim away all impression
material which is on the tissue surfaces, leaving an established border (Figure 4).

Border molding with the heavy body first, accomplishes two things. It creates a seal and makes
a loose denture fit, and it lifts the denture off the tissue slightly— approximately 1/2mm, which
creates relief for the final wash. The heavy body polyvinylsiloxane is ideal for border molding an
existing denture as it will not overextend and will roll to the existing borders. This maintains the
length and thickness of these borders.

1. Have the patient rinse out with very cold water for 1–2 minutes.

The cold water will shrink the tissues and reduce inflammation making an impression with the
maxillary arch constricted. Often the maxillary arch will expand slightly to compensate for an
ill-fitting denture.

Figure 4

2. Dry the ridges.

3. Make the final impression with “extra light” or “light” body wash (Figure 5). Avoid overfilling
the anterior of the maxillary denture with impression material.

4. Always seat the maxillary denture prior to the mandibular denture when making the
impressions simultaneously. Completely seat the maxillary denture and have the patient
open wide, moving the jaw side to side. Insert the mandibular denture, and have the patient
lift the tongue and border mold. Have the patient hold his/her teeth lightly in occlusion while
the impression material sets.

Figure 5

5