Clear aligners vs traditional braces: which should you choose?

Choosing between clear aligners and traditional orthodontic braces is one of the most important decisions for anyone who wants to straighten their smile. In recent years, orthodontics has undergone a genuine technological revolution that has significantly widened the treatment options available. Understanding the real differences between these two approaches allows you to make an informed choice, based not only on appearance but on objective clinical criteria.

The evolution of orthodontics: from mechanics to smart materials

Modern orthodontics has moved beyond the purely mechanical model of traditional braces by introducing thermoplastic materials that apply light, gradual forces. Clear aligners apply advanced biomechanical engineering to tooth movement, using three-dimensional simulation algorithms that make it possible to plan every stage of treatment in detail.

Traditional metal or ceramic braces, although many people consider them "outdated", still have specific clinical indications where their ability to apply continuous forces in multiple directions is particularly effective. The key is not to decide which system is better in absolute terms, but which best meets the biomechanical needs of each individual case.

Clear aligners: where technology meets biomechanics

The principle of programmed sequential movement

Clear aligners work through a series of custom-made trays that are usually changed every 7-14 days, according to the protocol set by the orthodontist. Each tray is designed to move the teeth by small amounts, in the order of fractions of a millimetre, respecting the biological limits of bone remodelling. This sequential approach makes it possible to plan tooth movement in all three dimensions, although the result achieved does not always exactly match the plan.

Digital intraoral scanning removes the need for traditional impressions and allows treatment to be planned virtually, so the patient can see the final result before treatment even begins. This represents a paradigm shift in communication between patient and dentist, turning decision-making from something abstract into something concrete.

Documented clinical advantages

The scientific literature highlights significant advantages of aligners in specific situations:

Better oral hygiene: being able to remove the aligners for meals and for brushing and flossing makes cleaning the teeth easier. Reviews of the literature report better periodontal health scores than with fixed braces and, in a study of about 450 patients, new white spots caused by enamel demineralisation appeared in about 1.2% of patients with aligners compared with about 26% of those with fixed braces.

Comfort and biocompatibility: with no brackets or metal wires, the risk of sores on the inside of the mouth is reduced. Aligners contain no metal parts, something to consider with your dentist if you have a metal allergy.

Predictable results: planning software makes it possible to identify potential issues in advance and adjust the treatment plan before starting. A meta-analysis found shorter average treatment times with aligners in the studies included, but also lower effectiveness than fixed braces in controlling torque and achieving adequate contact between the teeth.

Appearance during treatment: because the material is transparent, aligners are practically invisible at conversational distance, a decisive factor for professionals and adults who do not want treatment to affect their image.

Limitations and specific indications

Clear aligners have limitations in cases that require:

• Complex root movements or significant extrusions
• Marked rotations of canines and premolars
• Major vertical corrections of the bite
• Severe crowding requiring multiple extractions

Patient compliance is essential: aligners must be worn for most of the day, removing them only to eat and to clean your teeth, as instructed by the orthodontist. In teenagers or less cooperative patients, this can be a significant limitation.

Traditional braces: when classical physics is still irreplaceable

How fixed braces work

Traditional orthodontic braces use a system of brackets, wires and ligatures that can apply continuous, controlled forces in any direction. Thanks to its superelastic properties, the orthodontic wire exerts a constant force 24 hours a day, regardless of how cooperative the patient is.

In complex cases that require bodily movement of entire arches, severe rotations or skeletal corrections linked to growth, fixed braces generally retain a biomechanical advantage. The option of using auxiliaries such as intermaxillary elastics, springs or skeletal anchorage devices greatly expands what treatment can achieve.

Innovations in materials

Fixed orthodontics has gone through its own technological evolution:

Aesthetic polycrystalline ceramic brackets: a more discreet alternative to metal brackets, thanks to their tooth-like colour.

Heat-activated nickel-titanium wires: they apply light, continuous forces that are activated by body temperature.

Self-ligating systems: these do away with elastic ligatures and are designed to reduce friction; however, systematic reviews have not shown clear clinical advantages over conventional brackets.

When braces are the treatment of choice

Traditional braces are often the preferable choice for:

• Severe Class II and Class III skeletal malocclusions
• Significant anterior open bites
• Impacted teeth that need orthodontic traction
• Teenagers who are still actively growing
• Complex multidisciplinary cases involving surgery

An evidence-based decision-making protocol

The choice between aligners and traditional braces should follow a multifactorial decision-making process that takes into account:

How complex the case is: digital cephalometry, 3D models and a periodontal assessment show which system offers the best chance of success with the lowest biological risk.

The patient's psychological and social profile: age, profession, aesthetic expectations and ability to comply all have a significant influence on the choice of treatment.

Timing: in some cases aligners may take slightly longer, while in others they are faster. Digital planning makes it possible to estimate the expected duration, which nonetheless remains approximate.

A personalised cost-benefit analysis: the value of treatment should be assessed not only in financial terms but also in terms of quality of life during treatment, biological risks and long-term stability of the result.

The hybrid approach: the future of personalised orthodontics

One possible strategy is the sequential combination of the two systems. Hybrid protocols involve an initial phase with fixed braces to manage complex movements, followed by a finishing phase with aligners to perfect the details of the bite and the appearance of the smile.

This approach aims to combine the biomechanical advantages of fixed braces with the comfort of aligners; whether it is suitable must be assessed case by case.

Using temporary orthodontic mini-implants (TADs) together with aligners is extending their use to complex cases that previously could only be treated with fixed braces.

Digital technology and artificial intelligence in orthodontic planning

The latest software integrates machine learning algorithms that analyse thousands of treated cases to suggest the best treatment plan. These systems consider not only the final position of the teeth but also the most efficient biomechanical path to get there.

Predictive simulation of the space available for the tongue during tooth movement makes it possible to anticipate speech problems and help keep the patient comfortable throughout treatment, which is particularly important for professionals such as speakers, actors and teachers.

The experience at Nea Bios Dental Clinic, Rome EUR Laurentina

Dr Nihad Pljevljak, a dentist and oral surgeon with a PhD in Dental and Oral Diseases from Sapienza University of Rome, applies a personalised decision-making protocol to every patient. More than ten years of experience in the EUR area and the trust placed in him by public figures reflect the rigorous clinical approach and attention to detail that characterise every orthodontic treatment.

At Nea Bios Dental Clinic in Via Cesare Pavese 135 (Rome EUR), every treatment plan is based on a complete digital diagnosis including a 3D intraoral scan, computerised cephalometric analysis and a virtual simulation of the result. Dr Pljevljak, who is registered with the Rome Order of Physicians and Dentists (Ordine dei Medici Chirurghi e Odontoiatri di Roma), goes through all the possible treatment scenarios with each patient, explaining the advantages, limitations and alternatives of every option.

The clinic's multidisciplinary approach means orthodontic treatment can be combined with professional dental hygiene (teeth cleaning), teeth whitening and prosthetic rehabilitation when needed, with the aim of a complete aesthetic and functional result that remains stable over time.

Your orthodontic choice deserves a thorough professional assessment

The decision between clear aligners and traditional braces cannot be reduced to a simple aesthetic preference. Every smile has unique biomechanical characteristics that call for a specialist clinical assessment. Digital technology has made it possible to see the final result before starting, but clinical experience remains essential for that result to actually be achieved in the most efficient and biologically respectful way.

Book your personalised orthodontic consultation at Nea Bios Dental Clinic in Rome EUR. Our reception is available Monday to Friday from 9:00 to 13:00 and 14:00 to 18:00. During your first visit, Dr Nihad Pljevljak will analyse your case using advanced digital technology and explain all the available treatment options, with 3D simulations of the final result. You will receive a detailed treatment plan with an estimated timeline and transparent costs, so you can make an informed choice about the orthodontic solution that best suits your clinical and aesthetic needs.

Sources

1. Ke Y, Zhu Y, Zhu M. A comparison of treatment effectiveness between clear aligner and fixed appliance therapies. BMC Oral Health. 2019;19(1):24. PubMed
2. Papadimitriou A, Mousoulea S, Gkantidis N, et al. Clinical effectiveness of Invisalign® orthodontic treatment: a systematic review. Prog Orthod. 2018;19(1):37. PubMed
3. Rossini G, Parrini S, Castroflorio T, et al. Periodontal health during clear aligners treatment: a systematic review. Eur J Orthod. 2015;37(5):539-543. PubMed
4. Buschang PH, Chastain D, Keylor CL, et al. Incidence of white spot lesions among patients treated with clear aligners and traditional braces. Angle Orthod. 2019;89(3):359-364. PubMed
5. Al-Nadawi M, Kravitz ND, Hansa I, et al. Effect of clear aligner wear protocol on the efficacy of tooth movement. Angle Orthod. 2021;91(2):157-163. PubMed
6. Fleming PS, Johal A. Self-ligating brackets in orthodontics. A systematic review. Angle Orthod. 2010;80(3):575-584. PubMed