Hi all,
I’ve been having a naughty play with Picasa yesterday just messing with some of it’s functions after cropping, sorting and appraising this weeks photos.
I’ve put together a little Vid to hopefully better explain the anterior matrix technique I keep mentioning. Some people said they were struggling with it so hopefully this will help.
You can see it in high definition by clicking this link.
Or see the compressed youtube version!
Let me know what you think of putting some stuff on video like this, was it useful?
All the best Chris
P.S. If your struggling to see the youtube version I apologise, I think they must sensor them all before they go public. Just click on the link instead it doesn’t take long to load!
#1 by ChrisO'C at March 21st, 2010
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Here are two lovely video’s I find showing a similar technique. With more time this would be how I’d try to replace the filling.
I especialy liked the use of the brush and oscilating instruments. I think I’ll add them on my to buy list. Also note that the soft flex is only used for getting the flash not smoothing the labial surface I might take up that technique too.
http://www.youtube.com/watch?v=2g_QQgpYD6E&feature=related
http://www.youtube.com/watch?v=mucjFYXhwXQ&feature=related
#2 by alexandra at March 21st, 2010
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Thanks Chris, great video, great music!!
I was thrilled i found some systemp at work yesterday so i’m going to have a good at this on the next person who comes in. I have to say i like soft flex- but not the cardboardy ones the plastic very flexible ones are my favourites.
Oh and i’ve got my dad making a composite heater for me at the moment, we’re just having some trouble with the variable thermostat!
Love my geeky Saturdays.
#3 by Chris at March 31st, 2010
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Was that music ripped straight from porn?
#4 by ChrisO'C at April 5th, 2010
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Ha, I know what you mean. Maybe thats why Alex likes it
Song is “Good disease” by Aim
#5 by Alexandra at April 12th, 2010
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I’ve only just spotted this dreadful slur on my character!!
Cheers Chris- I’ll be seeing you next week so watch out…
#6 by Dhivia at April 16th, 2010
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great video chris..i’ll try and get my hands on some systemp and give it a go.. in the videos you posted ( the final restorations were AMAZING!), they mention placing bevels.. i thought that concept was no longer in vogue? or am i mistaken? do you routinely place them? im often frustarted with the end result of my comps, i do not get the lustre and finish i desire.. you mention pointy red and yellow burs that you use..i’d be interested to know where i could get some myself.. thanks! great work! i enjoyed all your posts!
#7 by Rikki Dhody at April 23rd, 2010
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great video, links and information.
I used this technique quite a few times now and find it predictable and fast with a good end result. What more could I ask for ?
Thanks.
#8 by ChrisO'C at April 24th, 2010
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Hi Dhivia, Thanks for the praise…
As for the bevels, I thought they were in vogue but please let me know if otherwise. I certaily don’t bevel as much as the chap in the 2 videos. I think you only really need to freshen up the enamel so it etches better and you open up a slightly greater surface area.
I think this i important especially if you are not selectively etching as the very top layer of enamel will contain a high proportion of fluoride and will take far longer to etch if you havent bevelled than the dentine can take.
I really can’t see what harm a small amount of bevel can do.. but I’m interested to hear why it is out of fashion. Have you been taught that at dental school? or have any papers? If so please share…
Hope you keep enjoying the blog it is great to have your input
Chris
#9 by ChrisO'C at April 24th, 2010
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Rikki,
I am delighted that you have used the technique and it has helped
I know you were having problems with it originally so that is especially pleasing.
If you have any pics you want to share or show off please feel free to email. They don’t have to go up on the blog if you don’t want, I just find it fun to see other peoples work.
All the best
Chris
#10 by matt at April 24th, 2010
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I like the bevel and am not afraid to place a relatively long one (1-2mm very very shallow), it seems to allow the composite to blend in with enamel to hide the transition between composite and enamel.
Bevelling also removes any unsupported enamel rods, which if removed during polishing once the composite has been placed seem to leave behind white lines at the composite-enamel margin. I didn’t used to bevel trying to be ultra consevative and was always disappointed by the appearance of the white line.
#11 by alexandra at April 25th, 2010
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I imagine bevelling was more common when we weren’t as good at bonding to dentine. I routinely bevel, mainly because of the ‘white line’ issue as i think dentine bonding is not as big a problem as it used to be. I’ve also noticed that if you’re using a dentine and an enamel shade then it seems to give a better transistion if you place the dentine shade right up to the edge, sloping upwards so there isn’t a huge thickness of enamel shade at the edge of the restoration- i was finding the edges looked odd before.
#12 by Neal at April 25th, 2010
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I would tend to agree the music is a little pornographic… good choice!
I do like that first video. As for the bevelling, I do it all the time because I genuinely do feel it provides a better bond of the overall composite restoration. If your bonding to sloped enamel at the margins then the surface area for bonding is greater and hence decrease microleakage and future staining. It gives a much better aesthetic result too. This is because a slight overlap provides a more gradual shade progression from composite to tooth. I think it also future proofs you – because composites stain at the margins and if there is some overlapping of composite I feel that polishing these at future reviews is easier as there is slightly more composite in thin section that can be removed.
I found an interesting video here that is worth checking out:
http://www.bioclearmatrix.com/Articles.asp?ID=164
#13 by Toronto Dentist Blog at June 29th, 2010
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Great presentation. You’re a maniac!
I ground out one of those Picassa shows for my Xmas staff party and it was work.
I go for beveling on the buccal surface to create a better marginal blend. Irregular margin helps as well.
The big difference though is I use small metal strips instead of mylar. Get nice tight contact and I can shape them to hold.
Stopped using mylar some 5 years back.
Joe
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