Question:

Hygiene patient interested in fixing crowding to improve hygiene. Im trying to brainstorm how to address this case. My thoughts- leave posterior crossbite, sequential distalize on upper to help make room for blocked out canines. My concerns are predictability of bonding to gold crown on lower for elastic wear. Would love some feedback on the case. I imagine sequential distalization plus  IPR

Answer:

Orthodontic Treatment Planning for Crowding, Missing Teeth, and Recession

In cases involving significant crowding, narrow palates, and missing teeth, orthodontic treatment planning becomes particularly complex. Ideally, it is best to avoid extraction when the patient has already lost a number of teeth. However, treatment options must consider multiple factors, including the patient's specific goals, existing dental conditions, and the potential risks of further complications such as gum recession.

Key Considerations in Orthodontic Treatment

One of the first challenges in this scenario is the presence of gum recession, especially on the canine teeth. Recession is a concern, as any movement of the canines—particularly significant movements—can exacerbate this issue. Orthodontists must carefully evaluate whether they are comfortable proceeding with treatment that might increase the likelihood of further gum recession.

Without a full set of diagnostic records, it is difficult to make a definitive treatment plan. However, the presence of recession on the canine tooth raises an important question: Can treatment be performed without worsening this issue?

Patient's Goals and Treatment Planning

The primary consideration when planning orthodontic treatment is the patient's chief concern. For some, aesthetic improvements, such as achieving a pleasing smile, are the primary goal. For others, issues like overjet (the horizontal overlap of the upper teeth over the lower teeth) may be of greater concern. Treatment plans should be tailored to these specific needs.

In this particular case, the patient’s lower arch contains gold crowns, which complicate bonding processes required for orthodontic devices such as buttons and elastics. Additionally, due to recession on the canine, any movement involving the canines should be carefully considered. Further movement in the region could increase the risk of more recession, which might compromise both the function and aesthetics of the smile.

Options for Addressing Crowding and Missing Teeth

If the goal is to address crowding and missing teeth, several options exist. One potential treatment plan would involve the extraction of the first premolars. This would create space for the canines to move into the positions of the premolars, potentially maintaining a Class I canine occlusion. Such a move would also help alleviate crowding by allowing the laterals to shift into more favorable positions.

Despite the potential benefits, the decision to extract teeth is often controversial and can be viewed as undesirable in certain cases. However, when significant crowding exists, with several blocked-out teeth, the decision to extract premolars might not reduce arch width. Rather, it may help improve alignment by utilizing the newly created space for canine repositioning.

Additionally, the key question is whether this approach will result in changes to the patient’s facial appearance or airway. As crowding is already a prominent concern, extracting the first premolars could assist in arch development without necessarily causing the arch to narrow. Therefore, the overall risk of airway complications or facial changes may be minimized, provided there is no pre-existing airway issue.

Considerations for Airway and Facial Aesthetics

When planning orthodontic treatment, it is crucial to assess whether the patient has any airway concerns. If airway issues are present, the treatment plan must prioritize improving airflow. In such cases, the orthodontist might consider Maxillary Skeletal Expander (MSE) or other expansion techniques to address these concerns, especially if the crowding is related to a narrow arch.

If the patient’s primary concern is aesthetics, and a sleep study reveals no airway problems, then an extraction plan involving two premolars could be a viable option. The movement of the canines into the premolar spaces could lead to a better aesthetic outcome, particularly if the patient does not have excessive protrusion of the lip. Moreover, the orthodontist could plan the movement using advanced software like ClinCheck, which provides a digital simulation of the treatment process to better visualize how the treatment will affect the patient's appearance.

A key consideration in the aesthetic outcome is the midface region. If the patient has a prominent lip or any concerns regarding facial appearance, it is important to ensure that the movement of the teeth does not worsen these features. Proclining the upper incisors could be an option if it leads to a better alignment without negatively affecting facial harmony.

Midline and Lateral Incisor Considerations

Orthodontists must also evaluate the midline alignment and whether the patient is willing to modify their lateral incisors. If the lateral incisors are underdeveloped or require reshaping, they may need to be augmented to improve aesthetic outcomes. If the patient is open to these changes, premolar extraction and canine repositioning could lead to a stable occlusion with a reduced likelihood of periodontal issues, as the arch width would remain unaffected.

Conclusion: Treatment Based on Goals and Diagnosis

In summary, treatment plans for patients with significant crowding, missing teeth, and recession should be based on a thorough assessment of the patient’s goals and specific concerns. Extraction of premolars may provide a solution to improve alignment and aesthetics, particularly when space is needed for canine repositioning. However, such decisions must be weighed against potential risks such as further gum recession, airway concerns, and changes to facial aesthetics. If the patient’s primary concern is aesthetic improvement, and no airway issues are present, premolar extraction could provide a stable, functional outcome.

Ultimately, the key to a successful treatment plan lies in understanding the patient’s needs, conducting a thorough diagnostic evaluation, and tailoring the treatment approach to address both aesthetic and functional concerns.