Please Sign in
User Name
Password
or Register
Not a member? Gain full access to all the dental juice !
Click Here...

Juce Home Demo Pages Juce Learning Team CPD new! Full Pages Index Help & FAQ CPD Certificates Masters Degree Search Direct Restorations Welcome Internal Bleaching - Lecture Internal Bleaching Porcelain Repair When to treat wear Amalgam Restoration Expand Bonded Amalgam Expand Ionomer Restoration Expand Anterior Composites Expand Posterior Composites Shrink Dentsply SDR Expand Wedging Wedges - take 5 Matrix Systems Expand Competency Tests Expand

Direct Restorations: Composite
MOB with SuperMat Matrix

image      image
Before and after: click to magnify


The slide show below demonstrates use of the SuperMat Matrix System



Slide show: MOB composite restoration

This is an orange
This is an orange
17/25 

 b r a i n   j u c e . . .

image
Click to magnify		 Plunger Cusp
The original restoration failed because it was too thin to withstand the occlusal forces. To make space for a new thicker restoration, this dentist chose to reduce a cusp on the opposing tooth. An alternative would have been to deepen the cavity on this tooth.

An over-erupted cusp that lies directly over a contact point (called a Plunger Cusp) can cause many problems, like food impaction and wall-cracking on excursions, so the decision was made to reduce it.
image
Click to magnify		 Complete Enamel Margins

 The bond between composite and enamel is much mure durable than the bond between composite and dentine.
 Be very careful not to remove the enamel at the bottom of the box, at the gingival floor.
 If this happens (accidentally, or during caries removal), consider using the C/GI Open Sandwich techniqe (described here)
  Damp Dentine

 Prior to applying bond, the dentine must be moist. 
 Dry dentine will repel the bonding liquid, preventing penetration into tubules.
 But note this is not the case with enamel: dry enamel takes bond OK.
  Composite Finishing

 99% of occlusal shaping should be done with hand instruments before curing the final layer. 
 If you do most of it with rotary instruments, you risk damaging the enamel, and causing micro-cracks to appear in the bond and the composite.
 Freshly set composite is full of internal stresses due to polymerisation contraction. Try to leave rotary finishing for a week, when water absorbtion by the composite will have relieved the stresses and strains.
  image
Click to magnify		 SuperMat Transparent

SuperMat matrices are available in thin stainless steel, and transparent plastic.
  Stainless steel: Easier to adapt to create a broader contact point.
  Transparent: Allow light penetration, so easier to cure the composite from the sides.

...
Educational aims of this juce

 This page aims to show you how to provide a posterior composite, using the SuperMat Matrix System.
 There is a step-by-step picture series that shows how to undertake this procedure. 
 Enamel margins, dentine dampness, plunger cusps, and other aspects of the procedure are discussed

This page contains verifiable CE / CPD



How much does dentaljuce membership cost?
12 months subscription to the whole site costs just £79 GBP
International payment in your own currency with PayPal
100+ hours of verifiable CPD / CE. No extra payments.

Pay by card or cheque

Pay by card or cheque

Member comments:
  • Really good, very user friendly and practical. (JW)
  • It has to be the best value CPD around, and probably the most useful. Many thanks.(WK)
  • Very impressed - keep being interrupted by patients turning up! (PW)
  • I couldn't manage now without Dentaljuce. (AH - BDS Student)
  • Well good, detail excellent, very clear to use (JM)
  • Very good material. Brilliant for CPD. (PC)
  • Excellent step by step guides and photos (SR)
  • Taking ORE soon - this site is soooooo useful (AK)
  • Excellent layout, great photos (PM)
  • I cannot believe how brilliant this site is. I have passed Part 1 of the MJDF exam, and it will help so much for my Part 2. The animations, videos and content in general is just brilliant. Thank you. (DI)
  • This is the Catherine Deneuve of online dentisty. (MF)
  • I have to say dentaljuce gets better each time I look. (PP)
  • This website is so great, I have been telling so many people. Fantastic. (DY)
  • Thought provoking, and good reminder of what we should know. (FC)
  • Concise and reflective
  • Excellent content clearly explained
  • Wow. I actually understand occlusion now, thank you so much. I saw those BDJ articles years ago when newly qualified and I didn't understand any of it. It is all so much more understandable now, thank you. (TD)
  • Brilliant videos, thank you. (WS)


Tags

adapt

amalgam

applied

before

bond

cavity

composite

contact

cusp

dam

damp

dentine

direct

dry

due

during

easier

enamel

excursions

failed

finishing

first

increments

instruments

magnify

margins

matrix

mob

moist

note

occlusal

opposing

optident

penetration

place

plunger

point

procedure

removal

removed

restoration

restorations

rotary

rubber

slideshow

slightly

space

stainless

steel

stresses

supermat

system

tooth

transparent

water

wedge

Back to top
Disclaimer
Home About Dentaljuce Contact Privacy Terms & Conditions

Reviewer's Feedback Area