Smart1 Implant Bar Overdentures

IMPROVING THE DENTURE EXPERIENCE

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Most patients that need teeth replacement look for solutions that will look natural, function well, and allow them to talk and eat food with confidence. According to the Journal of Prosthodontic Dentistry, it is estimated that approximately 37.5 million people wear dentures. Until recently, removable dentures were the only option for edentulous patients.

The removable option requires temporary adhesives to hold the prosthetic in place, and then these are removed at night during rest. The complaints that are often heard regarding this type of restoration are that they come loose, trap food, and cause discomfort. Also, because they are removable, they can create anxiety over the possibility that the denture can fall out at inopportune moments, causing embarrassment.

Currently, with the growth of implants and the desire to provide patients with solutions to these common issues, other solutions have emerged to address the need. One such solution is Burbank Dental Lab's Smart1 Implant Bar overdentures.

Smart1 Implant Bar Overdenture

Smart1

A Smart1 Implant Bar overdenture can be used to support Hader Bar or Locator® systems (see Figure 1). Since implants and jaw bone retain them, they are considerably more stable than conventional dentures (see Figure 2).  With this system, a metal bar is attached to implants. The number of implants used with each case varies depending on the needs of the patient. These bars are milled and offer the benefit of providing an ideal load distribution between the implants, thereby creating enhanced stability.

Hader Bar or Locator
Figure 1 - Hader Bar or Locator
Conventional Dentures
Figure 2 - Conventional Dentures

This system will help eliminate the top patient complaints consisting of the restoration coming loose, trapping food, and discomfort. Patients with this type of restoration feel more secure, have more power when eating, and feel more confident. The advantages of this prosthetic are:

  • The load is spread out more evenly over the bar, creating less direct force on the implants.
  • Retention is increased and facilitated by the prosthetic implant attachments.
  • The possibility of rocking anteriorly to posteriorly is eliminated.
  • It provides comfort by keeping the denture from impinging on the soft tissue.

Overdentures are best prescribed for patients who are missing all or most of their dentition. To be considered for this restorative option, they must have adequate bone in the area being treated. The implants are usually inserted toward the front of the mouth because this area typically has more bone and fewer nerves with which to contend. For any bone deficiency, an implant bar overdenture is not recommended.

The Smart1 Implant Bar overdenture is fabricated by designing the bar digitally and milling it out of titanium. These bars are designed to distribute loads evenly between the implants. Then a cobalt-chromium (Co/Cr) substructure is added to the overdenture. Co/Cr boasts an 800Mpa flexural strength. It is beryllium and nickel free, making it highly biocompatible. It is resistant to corrosion and chemically inert.

Precision Milling
Milling equipment at Burbank Dental Lab
Burbank Dental Lab milling equipment

Burbank Dental Lab has invested heavily in digital dentistry and is one of only 5% of labs to utilize computer numerical control milling, often referred to as CNC milling.

CNC milling uses computerized data and couples it with cutting tools that rotate at multiple points. While most dental milling is on a 3-axis to 4-axis mill, this precision mill is on a 5-axis rotation. A 5-axis mill can rotate on five unique axes at the same time. Most mills run on a necessary X, Y, Z-axes; a 5-axis machine adds two more directional points, which are A and B. Effectively, this creates the ability to manufacture a more precise output. These usually have a more accurate passive fit than other types of substructures. This passive fit helps to lower both biological and mechanical risks.

Milling Bars
Milling bars at Burbank Dental Lab

In any edentulous case, the type of restorative option that will work best depends on the patient's current oral health diagnostics. As discussed previously, adequate bone must be present and a critical factor in this type of modality's success. If the proper bone is not available, then a denture flange will be required to improve overall facial esthetics and provide lip support.

Other indications to consider when prescribing a Smart Implant Bar overdenture include:

  • The prosthesis will require a minimum of 15mm to 17mm of crown height space. The height variance is dependent upon the attachment type used.
  • There is a minimum height requirement of 8mm from the incisal edge to the bar/attachment.
  • If the occlusal table's distance to the implant platform is less than 15mm, the case should be evaluated for an alternate prosthetic option, such as a porcelain-fused-to-metal restoration.
Success Guides of Burbank Dental Lab
Patient Evaluation and Planning
Patient Evaluation
Patient Evaluation

Evaluation of the clearance is one of the essential factors determining if a Smart1 implant Bar overdenture is best suited for a specific patient. This step is also critical in deciding surgical options. To ensure the correct treatment options, the following information should be provided to Burbank Dental Lab:

  • Provide Bite Blocks that mimic the thickness required for the final prosthesis. If not opening the vertical, a duplicate of the existing denture should be sent.
  • Do a wax-up try-in complete with teeth set-up.
  • Take measurements of the wax-up
  • Record the thickness of the position where the implants should be placed
  • Measure at least two posterior markers on both the left and right sides.
  • Measure at least two anterior markers.
  • Measure from the center of the proposed implant to the buccal and lingual of the wax set-up.
  • Measure the occlusal area from the implant to the occlusal of the opposing.

It is also essential to consider the surgical options and present these to the patient when vertical space is limited. These should be considered if the vertical cannot be opened to provide the space needed for a successful prosthetic. These options may include bone reduction, sinus lifts, or bone grafting, etc.

Burbank Dental Lab is a powerful resource when it comes to planning and evaluating the ideal restorative options that provide real solutions to the most challenging cases. This support is coupled with state-of-the-art equipment and processes that ensure excellent fit, increase predictability, and provide overall patient satisfaction. That is the Burbank Dental Lab commitment. Call us today to discuss your next implant-supported case.

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