Clear aligners

Invisalign Clear Aligners in Pomona, Newport Beach and Brea

Reviewed by Dr. Ammar Siddiqi, DDS, MBALast reviewed

Invisalign clear aligners can treat selected orthodontic problems, and results depend on the diagnosis, the movements required, wearing the trays as prescribed, monitoring, and retention. Aligners are not interchangeable with braces in every case; some movements and complex bite problems are more predictable with fixed appliances or combined treatment. An in-person examination decides which approach fits. At Advanced Dentistry & Orthodontics, Dr. Ammar Siddiqi provides Invisalign, orthodontic care, and InSmile hidden braces, and Dr. Khalid Khoudari, Dr. Ziad Tedini, and Dr. Saif Liswi also provide Invisalign at all three offices.

Key takeaways

  • Clear aligners may be considered for crowding, spacing, relapse after earlier treatment, and certain bite problems; complexity varies.
  • Success depends heavily on wearing the trays as prescribed; inconsistent wear delays movement and can put the mouth out of step with the plan.
  • A digital simulation is a planning tool, not a guaranteed outcome; refinements are common when teeth do not track exactly as planned.
  • Retainers are needed after treatment because teeth can move.
  • Time and cost depend on complexity and adherence; a written estimate should list attachments, refinements, retainers, and replacement trays.

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Who may be a candidate for Invisalign?

Clear aligners are removable trays designed to move teeth in planned stages. The American Association of Orthodontists explains that each set is worn according to the treatment plan and that some, but not all, orthodontic problems can be treated successfully with aligners. Invisalign is one brand of clear aligner; the brand does not replace diagnosis, treatment planning, monitoring, and retention.

Aligners may be considered for crowding, spacing, relapse after prior orthodontic treatment, and certain bite problems. Gum health, cavities, restorations, missing teeth, jaw relationships, and growth all affect the plan. A 2024 systematic review found that aligners may be an effective alternative for selected movements while noting that more research is needed; marketing claims are not a guarantee of individual results.

How does aligner treatment work?

  1. Examination and diagnosis

    The clinician evaluates teeth, gums, bite, and jaw relationships and decides what records or imaging are needed.

  2. Treatment planning

    A digital plan proposes the tooth movements and estimates the sequence. The simulation is a planning and communication tool, not a promise.

  3. Active treatment

    Trays are worn and changed according to instructions, with progress visits at the office. Tooth-colored attachments or elastics may be used to help specific movements.

  4. Refinement

    Additional trays may be needed when teeth do not track exactly as planned.

  5. Retention

    Retainers are prescribed after active treatment to reduce unwanted tooth movement.

What does daily wear involve?

Trays are worn according to the schedule set by the treating clinician and removed for meals and for drinks other than plain water unless advised otherwise. Eating with trays in can damage them, and sugary or acidic liquid trapped against the teeth increases decay and erosion risk. Teeth are brushed or cleaned as directed before trays go back in. Temporary pressure, tenderness, or a mild speech change is common when a new tray is inserted; sharp edges, significant pain, a damaged tray, swelling, or a tray that does not seat should be reported to the office rather than forced.

How do aligners compare with braces and InSmile?

Invisalign clear aligners, conventional braces, and InSmile hidden braces compared
ConsiderationInvisalign clear alignersConventional bracesInSmile hidden (lingual) braces
AppearanceClear removable trays; tooth-colored attachments may be visible at close rangeBrackets and wires on the front of the teeth (metal or ceramic)Brackets and wires bonded behind the teeth; not visible from the front
RemovabilityRemoved for meals and cleaningFixed for the length of treatmentFixed for the length of treatment
ComplianceSuccess depends heavily on wearing trays as prescribedDoes not depend on remembering to wear anythingDoes not depend on remembering to wear anything
Range of movementsAppropriate for selected problems; some movements are less predictableBroad control, including many complex movementsSimilar control to conventional braces for many cases; candidacy is assessed individually
Speech and comfortTemporary pressure and mild speech change when a new tray is insertedCheek and lip irritation early on; adjusted with wax and timeTongue contact often needs an adjustment period for speech and comfort
HygieneTrays removed for brushing and flossing; trays themselves need cleaningCleaning around brackets and wires requires added careCleaning behind the teeth requires added care and specific tools
Retention afterwardsRetainers requiredRetainers requiredRetainers required
Who provides it at the practiceDr. Siddiqi, Dr. Khoudari, Dr. Tedini, Dr. LiswiDr. SiddiqiDr. Siddiqi

What are the risks, limitations and alternatives?

Possible issues with any orthodontic treatment include temporary pressure or soreness, irritation of the cheeks, lips, or tongue, speech changes while adapting, cavities or gum inflammation when hygiene is poor, unwanted tooth movement, root changes, and the need for refinements or a change of appliance. Moving teeth when gum health is inadequate can cause harm. Teeth can move after treatment, so retention is a long-term part of care whichever appliance is used. Patients should receive an individualized discussion of risks and alternatives, including limited treatment, monitoring, or no treatment.

What affects treatment time and cost?

Time and cost depend on complexity, appliance choice, records, the number of trays or adjustment visits, refinements, additional procedures, retention, and the patient's adherence to the plan. Advertised starting prices or monthly payments do not describe every case. Request a written estimate showing what is included, ask whether attachments, elastics, scans, refinements, retainers, and replacement trays are covered, and verify orthodontic benefits, age limits, lifetime maximums, and network rules directly with the insurer.

Offices, clinicians and financing

This treatment is offered at all three Advanced Dentistry & Orthodontics offices.

Clinicians who provide this care

Financing options include Cherry, CareCredit, and in-house financing. Review the interest rate, promotional-period rules, fees, and total repayment in writing before choosing one. See the financing and insurance page. Dental benefits vary by plan; ask the office for a written estimate and verify benefits directly with your insurer.

Dentist-reviewed guides

Read before your consultation. Each guide names its reviewing dentist and lists its sources.

Frequently Asked Questions

Can clear aligners treat every orthodontic problem?

No. Clear aligners can treat selected problems, but braces or other appliances may be more appropriate for certain complex movements or jaw relationships. An examination is required.

How many hours a day are aligners worn?

Wear instructions depend on the prescribed system and treatment plan. Follow the schedule provided by your treating clinician rather than a generic online rule.

Are attachments visible?

Attachments are tooth-colored but can be visible at close range. Their number and position depend on the movements planned.

What happens if an aligner is lost?

Contact the office. The correct response may be to use a previous tray, move forward, or order a replacement, depending on the stage and fit. Do not guess.

Are retainers optional after Invisalign?

No. Retention is necessary after orthodontic treatment because teeth can move. The clinician prescribes an individualized retention plan.

Sources

These sources support general patient education. Individual diagnosis, treatment options, timing, and risks require an examination by a qualified dental professional.

  1. Clear-aligner and orthodontic patient FAQsAmerican Association of Orthodontists. Accessed 2026-08-05.
  2. AlMogbel A, et al. Efficacy of Clear Aligner Therapy over Conventional Fixed Appliances in Controlling Orthodontic Movement: A Systematic Review. PubMed PMID 38784075.PubMed. Accessed 2026-08-05.
  3. Rossini G, et al. Efficacy of Clear Aligners in Controlling Orthodontic Tooth Movement: A Systematic Review. PubMed PMID 25412265.PubMed. Accessed 2026-08-05.

Request an evaluation

An evaluation establishes a diagnosis and the options that apply to you. It is not a promise that a particular treatment is indicated.

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