What is emergence profile and why it can be important to implant restorations?

 Screw retained implant restoration with properly shaped emergence profile


 The angle and the shape of the abutment or screw retained crown should be flare slowly and be concave if possible. This shape will not press on adjacent bone and tissue that will support the implant restoration. This should minimize inflammation and facilitate the dentists ability to full seat and torque down the implant restoration. A properly designed restoration is kinder to the surrounding tissues and may make their continued health and preservation more likely as well as facilitate proper cleansabilty by the patient.

Often times these restorations are designed by technicians who don't always understand the principles involved with proper perio prosthodontic design. The photo below shows an area about one mm away from the platform switch implant where the interface has a small ledge that brings it closer to the osseous interproximal bone. This is usually correctable by carefully using rotary abrasives to fix the poorly shaped area. While these restorations may work out ok, its clearly better to make the emergence profile with a concave or flat emergence profile and a smooth transition from titanium to ziconium interface ( assuming the restoration is not a ceramometal restoration). Under a close examination of this photo you can see that the mesial proximal bone is probably covering part of the implant head so a convex emergence profile may actually be pressing on the proximal bone. Even though this restoration was fully seated, it is possible that it is pressing on the proximal bone or associated soft tissue covering. Clearly it would be better if it had a smooth concave shape that would place the area further away from the proximal tissues. 





from Ask Dr. Spindel - http://lspindelnycdds.blogspot.com/2022/10/what-is-emergence-profile-and-why-it.html - http://lspindelnycdds.blogspot.com/

Comments

Post a Comment

Popular posts from this blog

Help! My Child is Terrified of the Dentist

Image
If you’re the parent of a young child, you know their brains are similar to sponges that soak up everything around them—especially in their first five years, which neuroscientists say is when they’ll do the most learning and developing in their entire life. At this formative time, your child may amaze you with what they notice: your facial expressions, the different tones of your voice, and your habits. If your habits include regular dental visits and an excellent oral hygiene routine, they’ll notice and want to emulate you. If you happen to feel anxious about your dental visits, or you groan when you’ve got to floss and brush, they may synchronize and feel your dread. This could lead to dental fears that stick with them for years—potentially a lifetime! Kids Can Be Courageous If you’re feeling guilty right now, go ahead and put that away as it won’t serve you or your little one. Everyone has some room for improvement, and Coastal Pediatric Dentistry® is here to help show you an...
Read more

Going for the Gold?

Image
On the left is the older allow, on the right the new one that my lab has chosen to use The cost of a penny weight of pure gold is currently $79.53. The cost of a penny weight of pure palladium is $130.6. It used to be that palladium was added instead of gold to the precious metals often used for pfms, but now laboratories are finding that palladium is no longer affordable. The lab that I am using has just changed the formulation of the metal it's using to one that has more gold than palladium. I really do not mind, but metals with more gold are softer and often easier for a dentist to accidentally polish off delicate margins. It is important when polishing "higher gold" formulations to exert less hand pressure when performing the final polishing of the crown's margins. Other wise there should be no problem with this change. Traditionally labs have chosen alloys with higher gold percentages for optimal esthetics, since alloys with higher concentrations of ...
Read more

Lemon Juice – The Good, the Bad, & the Sour

Image
In a great tale of opposites, lemon juice can be both acidic and basic, or alkaline. Read on to find out why people are talking about this, and what it means for your oral and overall health . What is pH and why does it matter? Drinking lemon juice (usually diluted in a glass of water or added to a cup of tea) is a beloved health tonic among fans of natural medicine. Potential benefits include lower cholesterol, lower inflammation in the body, and increased metabolism and energy. Lemon also contains high levels of antioxidants and vitamin C that boost your immune system. On a scale from 0-14, a pH of 7 is neutral (pure water) while numbers below 7 are acidic (unhealthy), and above 7 are basic or alkaline (healthy). Believers in holistic health blame many ailments on the body’s pH being too low or too acidic. Increasing your body’s pH is called “alkalizing.” Lemon juice in its natural state is acidic with a pH of about 2, but once metabolized it actually becomes alkaline with a pH ...
Read more