Moisture Control Flashcards
High Volume Evacuator
A type of the oral evacuator system is high volume evacuator HVE.
HVE is used for most dental procedures especially when dental hand-piece in use.
HVE does following
- keeps the mouth free of saliva, blood, water, and debris.
- Retracts the tongue and cheek from field of operation
- Reduces bacterial aerosol caused by the high speed hand-piece.
Positioning the HVE
The dental assistant should position the HVE colse to the handpiece to catch spray and debris before they collect int the patient’s mouth.
- place the evacuator prior to dentist positioning the handpiece and mouth mirror.
- Position the HVE on the surface of the tooth closest to you
- position the tip as close as possible o the tooth being prepared
-position the bevel of the HVE so that it is parallel to the tooth surface.
-keep the edge of the tip even or slightly beyond the occlusal or incisal edge.
Positioning the HVE
- Maxillary right posterior region
- maxillary left posterior region
- maxillary anterior region
-mandibular right posterior region - mandibular left posterior region
-mandibular anterior facial region - mandibular anterior ligual region
Saliva ejector
Saliva ejector function is to remove liquids from the mouth. It is not poerful to remove debris.
Saliva ejector made of soft plastic tubling like small straw
indications used are
- prevention procedures such as florid treatment, and sealant placement
- controlling saliva under the dental dam
- othodontic bondind procedures
Timing the used of the HVE
when suction is needed?
when HVE is positioned?
when to remove the suction tip?
Placement of the saliva ejector
-bend and shape the saliva ejector for stationary placement.
- position the ejector under the tongue
- position he ejector the side on which the dentist is working
-Hold the saliva ejector throughout the procedure, sweeping the mouth to remove fluids,
The air water syringe
-use to complete the rinsing process.
-The air water syringe increase
-the visibility of the treatment area
- use it before dismissal
The air water syringe do the following
- direct the tip toward the tooth being worked on
- maintain a close distance between the operative site and the syringe tip.
- use air on the mouth mirror
- when you hear the handpiece stop, it time to rise and dry the site.
- when completing a limited area or full mouth rinse, move the tip while spraying the area.
Rinsing the oral cavity
- Limited area rinsing
- performed frequently throughout a procedure.
- Accomplished quickly and efficiently.
Full mouth Rinsing:
* freshens the patient’s entire mouth
*complete at the end of the procedure.
Islation of teeth
To obtain the best results from the dental procedure the are being treated should be kept dry and isolated from the environment.
Isolation techniques should
- Be easy to apply
- be safe for soft and hard tissues
- be comfortable for the patient
- provide retraction for better visualization for operator.
-prevent moisture contamination
-Isolate the area of concern
WHY isolation so important? for the area ir tooth treated should be kept free from blood, saliva to help prevent infection from failed restoration
WHAT are THREE most common isolation technique used in dentistry?
- cotton-roll isolation
- Dry angle isolation
- dental dam placement
cotton-roll isolation
a common type
advantages are
- easy to apply
- require no additional equipment
disadvantages of cotton-roll isolation
- does not provide complete isolation
- does not protect the patients from aspiration
- can stick to he oral mucosa
-must be replaced frequently because of saturation
-provides only limited retraction
Placement in the maxillary arch and placement in the mandibular arch.
Dry angle isolation
-it blocks the flow of saliva
-protects the issues in this area from injury caused by the dental bur or other instruments.
- Dry angle isolation pads can become soaked and might need to be replaced several time.
- Dry angle isolation can easily be removed after soaking it with water and separating it from the tissue.
Dental dams
A thin latex materials (stretchable) that acts as a barrier when applied to selected teeth.
dental dam keeps debris from the treatments area away from the rest of the mouth.
- the dam is placed after the local anesthesia is administered and before the procedure begin.
- dental dam can be placed in about 2 minutes.
Facts: using dam on a patients who is allergic to latex. YOU might need to use a dam that is latex free.
- Provides infection control
- safeguards the patient’s
- protects the patient from accidental inhalation or swallowing of debris
- protects the tooth from contamination
- provides moisture control
- improves access
- improves visibility
- increases dental team efficiency.
Dental dam materials
*Dental dam materials come in different thicknesses; thin, medium, and heavy.
*thin or light dental dam materials are typically used in endodontic applications because only one tooth is isolates at a time.
- medium thickness materials are used in operative procedures.
- heavy materials are used when tissue retraction and extra resistance to tearing are required.
- heavier dams are also used to isolate teeth with tight contracts
Dental dam materials are available in the following ways
- latex or latex free
- size 6x6 inches for adults and 5x5 inches for children
- wide range of colors, from light to dark from light to dark
- dentists preferred by dentists because they provide a contrast with tooth
-In various scents and flavors
Dental Dam frame
dental dam frame is necessary for a Dental Dam frame. Dental Dam frame a plastic or metal that can be sterilized. dental dam is stretched around the frame, help to keep the dam out of the operator;s work area
Three common types if frames
- plastic U shape frame: placed under the dental dam material
- Young frame: placed on the outside of the dental dam. patients more comfortable wit this one.
- otsby frame: round plastic frame is placed outside of the dental dam. outer portion of the frame.
Denatl dam equipemnt
Dental dam napkin is cloth absorbent material placed between the patient’s face and the dental dam materials.
