S2 - Occlusal Splints Flashcards
What is needed to send to lab for occlusal splint?
impression plus occlusal records
splints can have canine rise but generally ask for flat occlusal plane
Impression (material, tray, opposing, how to remove, what to check for in impression?)
- impression in 100hr stable alginate (e.g. chromatic alginate)
- use metal Rim-Lok tray for arch splint is going on (DONT use adhesive)
- use plastic disposable tray for opposing arch (use adhesive)
- use SNAP REMOVAL
- check for no pulling away of impression from tray
Occlusal records (material, what to do/what not to do and why?)
- use PVS bite reg
DO NOT get pt to bite together, place a cotton role anteriorly or on canines bilaterally so that there is 3-4mm gap between upper and lower teeth then squirt material in (idea is to record registration without teeth contacting)
WHY? splint is atleast 3-4mm thick and you are allowing for this thickness
What is Clearsplint™ ?
slightly flexible and not completely hard like acrylic splint
Instructions for Clearsplint™ insertion and storage
place in WARM water for 30seconds before inserting
NOT to be stored in water as will turn milky, use just toothbrush and toothpaste and shake dry
When should you do md splint instead of mx and why?
deep 100% overbite (lower anteriors occluding with soft tissues of palate)
no room because material of mx would be so thick that the patient would feel their mouth is ‘propped open’ too far
Why should you use metal tray over plastic?
dont cause as much distortion of impression material as plastic tray
After inserting splint, pt has AOB. Is this normal? what to do?
You DONT want this
grind away till normal, then polish (need a highly polished surface for teeth to glide over)
Do you have to take occlusal record for splint?
not rly unless several teeth missing or malocclusion
Why do you need to use snap removal for alginate?
due to visco-elastic property of alginate - slow removal causes distortion, need fast snap removal
Why might a pt have trismus after md 3rd molar exo?
damage to insertion of masseter
How does an occlusal splint help muscles of face when clenching?
spams in temporalis occur during overclosure (clenching), splint opens occlusion causing stretching of temporalis
What is a pro and con of bilaminar splint?
ease of fitting splint to teeth w/o adjustment
however soft material can be snug fitting and pt may complain about tightness (cannot adjust w acrylic burs like hard splint)
If a tooth is supra-erupted, how should a splint be made?
splint must be made like this too
T or F patient w implant therapy must wear a splint?
T