|
| Home | Dentist Credentials | One Day | No Prep Veneers | Photo Gallery | Makeovers | Whitening |
 |
 |
|
| Nobel Biocare Sirona Implant Partner Total Maxillary Mandibular Teeth Replacement Rehab in County areas Cook Northbrook Evanston North Shore Chicago |
Daniel Marinic DDS Replace Crown Failures 2611 Broadway Ave Metro Chicago Illinois Evanston IL 60201 847-475-8700  Home Credentials On Site Lab Non Invasive Crowns One Day Teeth All On Four NobelActive Immediate Loose Implants Missing Loose Denture Gum Contouring Bad Crowns Failed Implants Bridge Repair No Bone Full Reconstruction Osseointegration Dentures Occlusal Analysis Mini Implants Shifting Teeth Gum Disease Veneer Bonding Bad Veneers Marius Bridge Chicago Invisalign Dental Implants Same Day Teeth TeethInAnHour Surgery Guides Denture Poll Photo Gallery Procedure Videos Tech Videos Prevent Worse Bone Resorption Bone Grafting Platelet Rich Plasma Oral Sedation Smile Whitening Cosmetic Dentistry Guided Implant Consult Request Ask The Dentist            |
Failed Dental Crowns: Diagnosis and TreatmentReplacement Restorations: Bad versus Worn OutCrown Failure DynamicsPorcelain crown restorations can fail for a variety of reasons. Product failure however is seldom the cause ... it is rare that the integrity of high grade porcelain or the fabrication process (in the dental lab) becomes suspect. Dental science and engineering have all but eliminated those types of failures.
How, when and in what fashion a crown fails is actually a function of two key elements. One consideration usually focuses on the preparations made for placing the crown. Under-preparation or over-preparation of the tooth structure can be suspect. Bonding issues related to cementation characterstics and possible contamination of the bonding surface can cause crowns to go bad.A second consideration focuses on where the restoration was used in the patient's treatment. Different locations involves different preparation and different bonding procedures for anterior teeth as compared to posterior teeth. In many instances... even the cementation requirements can differ. Loose Fitting CrownsBite and occlusal issues are common causes... as well as generalized trauma to the affected tooth. Bite problems, if they are immediate, may suggest inaccurate treatment. If the bite problems occur over an extended period of time... it may be due to issues involving other tooth structures and the overall occlusal relationship.Inadequate existing tooth structure or poor preparation of the existing tooth structure may be the culprit. In some instances, with Dr. Briglia's patients, a build up and post may be implemented to create the needed structure for a crown to adhere to. If certain physical properties aren't monitored closely, even a brand new build up can fail, due to the inadequate relationships of physical forces (biting) and retention qualities of surface areas. The bonding process and bonding materials can often lead to crowns becoming loose in a very short time. Issues of over-preparation or under-preparation can be the cause. Matching the ideal cement product with the type of bonding surfaces can be critical. Contamination of the bonding surfaces is a frequent cause, arising from air borne bacteria, saliva and even a patient's breath can compromise a bonding procedure. Older crowns often become loose due to decay occuring under the crown. Decay can become manifested either through leakage between the bonding surfaces that allow bacteria ot accumulate. In other instances the preparation process did not remove 100% of the existing decay. This decay-causing-looseness event occurs frequently in certain types of bridgework applications. Anchor teeth restorations, due to the biting forces operating on the bridge, may cause bonding surfaces to flex and eventually leak. DiscolorationsMany of the older crowns produced during earlier generations of dentistry science become discolored because underlying metal characteristics. Errors in creating and assuring secure margins of the crown can also cause the "dark line effect" on a crown. The use of all porcelain crowns or porcelain fused to gold crowns, as used in our office, overcomes this age old problem.Sensitivity - PainTooth sensitivity (reactions to hot and cold temperatures) that occurs immediately after placement of a new crown can be caused by indequate bonding procedures. Internal structures of the original tooth structure are indequately sealed due either inaccurate preparation or contamination of bonding compounds.Pain associated with biting pressure may indicate a crown treatment that may have too much height or poor match of occlusal surfaces of an adjacent tooth. In some severe instances, stories of new crowns being ground down to the point of exposing underlying metal structures are not unheard of. Precision use of Articulators enables dentists to overcome this issue. Unfortunately, articulators are not used as often as they should be. Doctors who readily accept and/or seek out the development of complex multifaceted treatment plans tend to have the technical know-how of overcoming what should be common error issues in dentistry. Because of the vast experience acquired in successfully treating chronic dental problems, routine and common place errors in judgement and/or application of treatment rarely occur. Routine Crown ReplacementUnfortunately, dental restorations rarely last forever. Dental crowns wear down, just as normal teeth do. Crown wear and tear however, can become accelerated in some cases, depending upon the types of products used over the years (each brand and type wears differently) and on-going bite characteristics of the patient.Bruxing or teeth clenching (most often at night) are known to break off, chip and crack even the best of dental crown products. Bonding failures can also occur, leading to the development of decay under the crown, which later causes instability. Replacing crowns that show significant signs of wear and tear are frequently the only required treatment to regain normal dental function and a natural feeling bite. Left untreated, the condition of "bite collapse" occurs... causing significant changes in jaw positioning relationships and changes in facial appearances. Questions?Crown failures are a complex problem for some patients, especially in instances where the occlusal relationships have been unknowingly disturbed through prior treatments or some significant event. Persons with a special crown problem that isn't addressed on this page are invited to contact Dr. Marinic directly with their questions.Use our convenient on-line Consult Request form or the Ask The Dentist form. Dr. Marinic will respond to you directly with the answers or information you need to make an informed decision. Or, call our office at (847) 475-8700 to schedule a Consultation appointment.  |
|
