Clear Aligners vs Braces vs Lingual Braces: What the Evidence Says, and When Jaw Surgery Is Involved

Choosing between clear aligners, traditional braces and lingual braces is one of the most common questions patients ask before orthodontic treatment. The honest answer from the research is that the "best" appliance depends on what you are correcting. This article summarises peer-reviewed systematic reviews and trials indexed in PubMed, explains where each option is strongest and weakest, and then covers the part that is often missed: when the real problem is the jaw, not the teeth, and how aligners and braces fit into orthognathic surgery.

Clear aligners vs braces: which works better?

A 2025 systematic review and meta-analysis in the European Journal of Orthodontics pooled 15 trials with 1,084 patients. In non-extraction cases it found no significant difference in treatment quality or duration between clear aligners and fixed appliances. In extraction cases, fixed appliances gave superior treatment quality, which the authors attributed to better control of tooth movement. Evidence on post-treatment stability was limited but showed similar results, and heterogeneity and short follow-up limited the conclusions [1].

On treatment time, a systematic review of ten studies (six randomised) found low-certainty evidence that aligners and fixed appliances take a similar time in mild to moderate crowding. It also noted that patient and treatment factors affect duration as much as the appliance does [2]. So "aligners are faster" is not a claim the current evidence supports.

Where braces still have the advantage

A meta-analysis of extraction-based treatment found that aligners showed discrepancies between planned and achieved movement, including excessive mesial tipping of the upper first molars (mean difference of -6.08 degrees), under-retraction of about 1.9 mm, and inferior root control and occlusal contact scores compared with fixed appliances [3]. This is why complex cases, especially those needing extractions, bodily tooth movement or precise root positioning, are often planned with fixed appliances, sometimes with aligners as an adjunct.

Gum health, plaque and white spot lesions

Aligners are removable, so they are easier to clean around. Several reviews support a hygiene advantage:

• A GRADE-based systematic review of six randomised trials found periodontal parameters were better with aligners, but the certainty was low for periodontal health and very low for oral hygiene, and the benefit was highly dependent on patient compliance [4].
• A meta-analysis of 31 articles (17 in the meta-analysis) reported lower negative impact on quality of life and better plaque, gingival, probing depth and bleeding values with aligners. It also reported about ten times lower risk of white spot lesions [5].
• A separate meta-analysis of 14 studies found significantly lower plaque accumulation with aligners (SMD -1.58) and moderate-quality evidence for fewer white spot lesions, with caution because of risk of bias and heterogeneity [6].
• A large meta-analysis of 57 studies and 9,101 patients found white spot lesion prevalence of about 55% in orthodontic patients versus about 29% in untreated people, with conventional fixed appliances carrying higher odds than other appliances, and risk rising with longer treatment [7].

The practical message: aligners can be kinder to gums and enamel, but only if worn and cleaned as instructed. Good brushing, fluoride and regular reviews matter with any appliance.

Lingual braces vs clear aligners: what is known

Lingual braces are bonded to the inner (tongue) side of the teeth, so they are not visible from the front. The evidence base is smaller than for aligners or labial braces, and most of it is observational:

• In a retrospective comparison of 72 patients, a fully customised lingual system (Incognito) and a labial straight-wire system showed no difference in finishing quality on the American Board of Orthodontics objective grading system. Mean scores were 12.7 for lingual and 16 for labial, p = 0.152. The study involved two experienced orthodontists and the authors called for larger prospective studies [8].
• In a randomised trial of lingual appliances, articulation of the /s/ sound deteriorated significantly in the first month or so, but the change was no longer statistically significant three months after placement in the conventional lingual bracket group. At 24 hours, tongue irritation was significantly higher with conventional lingual brackets than with the C-lingual retractor, and oral discomfort decreased over time in both groups [9].
• A commentary summarising a systematic review on speech reported that speech difficulties with aligners and fixed appliances are usually transient, normalising in about 7 to 14 days for most patients and 30 to 60 days for a few, and that lingual fixed appliances produced more speech difficulty than labial braces or aligners [10].
• A cost-simulation study from Germany modelled the long-term cost of treating post-orthodontic enamel damage and suggested that lingual treatment could be more cost-effective in the long run. It is a model, not clinical outcome data, so it should be read as a hypothesis [17].

Lingual systems are technique-sensitive, and results depend on the system used and the clinician's training and experience. If invisibility is your priority, the real comparison is lingual braces versus clear aligners for your bite, and a case-by-case assessment matters more than the brand name.

Quick comparison

Option	Where the evidence is strongest	Main limitation
Clear aligners	Mild to moderate crowding without extractions; hygiene and comfort	Less precise for extraction cases and root control; needs consistent wear [1, 3, 4]
Fixed labial braces	Complex tooth movement, extractions, root control	More plaque and white spot risk; visible [1, 3, 7]
Lingual braces	Hidden appliance with finishing quality comparable to labial in one study	Tongue irritation and more temporary speech difficulty; thinner evidence [8, 9, 10]
Orthognathic surgery plus orthodontics	Skeletal jaw discrepancies that teeth movement alone cannot fix	Needs surgery and joint surgeon-orthodontist planning [11, 15]

When the problem is the jaw, not the teeth

Braces and aligners move teeth within the jaw bone. They cannot reposition the jaws themselves. When the upper and lower jaws are out of balance (for example an underbite, a very recessed lower jaw, an open bite, or facial asymmetry), orthodontics alone can sometimes disguise the problem by tilting teeth ("camouflage"), but it cannot correct the underlying skeletal relationship. These patients are usually planned for orthognathic surgery together with orthodontic treatment, and the decision on the protocol is made jointly by the surgeon, the orthodontist and the patient [15].

If you are unsure whether your bite problem is dental or skeletal, a maxillofacial surgeon can assess it with a clinical examination and imaging. The orthognathic surgery and clear aligners pages explain how each is assessed in practice, and jaw position problems can also be linked to TMJ disorders and, in some patients, to snoring and sleep apnea.

Can you use clear aligners with orthognathic surgery?

Increasingly, yes. A 2025 systematic review in the Journal of Oral and Maxillofacial Surgery included 16 clinical studies (375 patients). It found no significant differences in dental and skeletal changes between aligners and fixed appliances in orthognathic patients, higher patient satisfaction with aligners (3 to 5 points higher on a 10-point scale), and better periodontal health. It also reported that, in Class III cases, studies using pre-surgical aligners recorded an increase in incisor-mandibular plane angle of 3 to 15 degrees. The authors cautioned that the quality of the evidence was low [11].

A second systematic review of aligners in the post-surgical phase (10 studies, 258 patients) reported stability comparable to fixed appliances with no significant difference in short-term relapse, fewer clinical appointments during pre-surgical preparation, and better periodontal health and less discomfort in randomised trials. Heterogeneity and the lack of long-term controlled studies limit these conclusions [12].

In practice, appliance choice for orthognathic patients is individualised. Aligners suit some patients better than others, fixed appliances remain in use, and the plan should be decided by the surgeon and orthodontist treating you rather than by appliance marketing.

Surgery-first vs orthodontics-first jaw surgery

Traditionally, orthognathic surgery follows many months of pre-surgical braces (orthodontics-first). In the surgery-first approach, surgery is done early, with little or no pre-surgical orthodontics, and orthodontics follows. A review in Oral and Maxillofacial Surgery Clinics of North America described reduced treatment duration of about 5 months compared with the conventional approach, high patient satisfaction, and a reliance on virtual surgical planning and skeletal anchorage [14]. A 2025 systematic review of nine comparative studies reported that surgery-first consistently shortened overall treatment time, with broadly comparable skeletal stability at about one year, similar TMJ outcomes, and earlier aesthetic benefit, based mainly on observational studies [13].

Surgery-first is not suitable for everyone, and careful case selection and strict protocol adherence are emphasised in the literature [13, 15].

How to choose: a practical guide

• Mild crowding or spacing, healthy gums, motivated to wear aligners: clear aligners are a reasonable option and may be easier to keep clean [1, 4].
• Complex movement, extractions, rotations or root control needed: fixed braces are usually more predictable [1, 3].
• You want a hidden appliance: discuss lingual braces and aligners, including the speech and tongue-comfort trade-offs [9, 10].
• Underbite, open bite, jaw asymmetry, very prominent or recessed jaw, or jaw-related pain or breathing problems: get a skeletal assessment before choosing an appliance, because surgery may be part of the plan [11, 15].
• After any treatment: plan retention. A Cochrane review found the evidence on the best retention method is low to very low certainty, so follow your clinician's individual plan [16].

Limits of the evidence

Most comparative studies are short, many are non-randomised, and reviews repeatedly report high risk of bias, heterogeneity and low certainty for outcomes such as periodontal health, stability and speech [1, 4, 11, 12]. Recommendations here describe what current research shows on average. Your own bite, jaw position, gum health and goals decide what is right for you. This article is educational and is not a substitute for an examination.

Next step

If you are weighing aligners, braces or lingual braces and suspect your jaw position may be part of the problem, you can book a consultation with Dr. Jishnu Mohan, oral and maxillofacial surgeon in Kochi. You will be asked for your concern and a few details, and the clinic will reply on WhatsApp.