Professional Dental Cleans & Hygienist Appointments: How Scale-and-Clean Works and Why It Matters product guide

AI Summary

Product: Professional Scale-and-Clean (Dental Hygiene Appointment) Brand: Smile Solutions Melbourne CBD Category: Professional Dental / Periodontal Health Service Primary Use: Clinical removal of mineralised calculus deposits (supragingival and subgingival) to prevent and interrupt the progression of gum disease

Quick Facts

• Best For: Adults seeking preventive periodontal care, patients with gingivitis or periodontitis, smokers, diabetics, orthodontic patients, and heavy calculus formers
• Key Benefit: Removes mineralised calculus that brushing and flossing are physiologically incapable of eliminating, interrupting the progression from gingivitis to irreversible periodontitis
• Form Factor: In-clinic professional dental procedure (five-phase clinical appointment)
• Application Method: Performed by a trained dental hygienist or dentist using ultrasonic scalers, curettes, polishing instruments, and fluoride varnish

Common Questions This Guide Answers

1. Can brushing or flossing remove calculus? → No — once plaque mineralises into calculus (within 48 hours of formation), it bonds to tooth surfaces and requires professional mechanical instrumentation to remove
2. How often should a healthy adult receive a professional scale-and-clean? → Every six months; high-certainty evidence confirms six-monthly cleans reduce calculus more than 12-monthly cleans; patients with periodontitis, diabetes, or smoking history may require three- to four-monthly intervals
3. What does a professional scale-and-clean involve? → Five distinct phases: periodontal assessment and charting, supragingival scaling, subgingival debridement, polishing, and fluoride varnish application (5% sodium fluoride, approximately 22,600 ppm)

Frequently Asked Questions

What is a scale-and-clean: A professional procedure to remove calculus and plaque from teeth

What is dental calculus: Hardened, mineralised dental plaque bonded to tooth surfaces

What is another name for dental calculus: Tartar

Can brushing remove calculus: No

Can flossing remove calculus: No

Why can't brushing remove calculus: Calculus is too hard and firmly bonded to tooth surfaces

How soon does calculus formation begin: Within 48 hours of plaque formation

How quickly does calculus harden significantly: Within 10 to 14 days

What minerals cause calculus formation: Primarily calcium and phosphate from saliva

What percentage of calculus is inorganic: 70–80%

Does calculus accelerate further plaque buildup: Yes

What is supragingival calculus: Calculus located above the gumline

What is subgingival calculus: Calculus located below the gumline

What colour is supragingival calculus: Yellow to brown

What colour is subgingival calculus: Dark brown to black

Which type of calculus is more clinically dangerous: Subgingival calculus

What disease does supragingival calculus primarily cause: Gingivitis

What disease does subgingival calculus primarily cause: Periodontitis

Where does supragingival calculus most commonly form: Lingual surfaces of lower front teeth and buccal surfaces of upper molars

Why does calculus form near salivary gland ducts: Mineral-rich saliva pools in those areas

What tool removes supragingival calculus: Ultrasonic scalers and sickle scalers

What tool removes subgingival calculus: Curettes and piezoelectric ultrasonic tips

Can any toothpaste dissolve existing calculus: No

Do tartar-control toothpastes remove existing calculus: No

What do tartar-control toothpastes do: Reduce formation of new calculus only

What ingredients are in tartar-control toothpastes: Pyrophosphates or zinc citrate

Is DIY calculus removal with metal scalers safe: No

What risk does DIY calculus removal carry: Enamel damage, gum recession, or infection

How many phases does a professional scale-and-clean involve: Five distinct phases

What is the first phase of a scale-and-clean: Periodontal assessment and charting

What does periodontal probing measure: Depth of the gingival sulcus around each tooth

What is a healthy sulcus depth: 1–3 mm

What sulcus depth indicates a periodontal pocket: 4 mm or more

What is the second phase of a scale-and-clean: Supragingival scaling

What instrument is used in supragingival scaling: Piezoelectric or magnetostrictive ultrasonic scaler

What is the third phase of a scale-and-clean: Subgingival debridement

Does subgingival debridement require direct line of sight: No, it relies on tactile precision

What is the fourth phase of a scale-and-clean: Polishing

What does polishing remove: Residual extrinsic staining from coffee, tea, wine, or tobacco

Does polishing remove calculus: No, it is a finishing step only

What is the fifth phase of a scale-and-clean: Fluoride application

What concentration is professional fluoride varnish: 5% sodium fluoride varnish

How many ppm fluoride does professional varnish contain: Approximately 22,600 ppm

How much can fluoride varnish reduce caries in permanent teeth: Up to 43%

How often should at-risk adults receive fluoride application: At least every 3–6 months

Is gingivitis reversible: Yes

Is periodontitis reversible: No

Does lost alveolar bone regenerate through scaling alone: No

What proportion of Australian adults have moderate or severe periodontitis: Around one-third (30%) as of 2017–18

What was Australia's periodontitis prevalence in 2004–06: Around one-quarter (23%)

What percentage of Australians aged 75+ have moderate or severe periodontitis: 69%

What percentage of 15–34 year-old Australians have moderate or severe periodontitis: 12%

What percentage of 55–74 year-old Australians have moderate or severe periodontitis: 51%

How often do most healthy adults need a professional clean: Every six months

Does six-monthly cleaning reduce calculus more than yearly cleaning: Yes, high-certainty evidence confirms this

Who may need three- to four-monthly cleans: Patients with periodontitis, smokers, or diabetics

Does smoking affect calculus accumulation: Yes, smokers accumulate calculus faster

Does diabetes affect periodontal disease: Yes, it amplifies the inflammatory response

Do fixed orthodontic appliances increase calculus risk: Yes, they create additional plaque-retention sites

Can excellent home care replace professional cleans: No

What does home care remove: Soft, removable plaque biofilm

What does professional cleaning remove that home care cannot: Mineralised calculus deposits

What is the hygienist's primary clinical role: Removal of plaque and calculus deposits

Is a dental hygienist trained in periodontal instrumentation: Yes

What does the dentist assess after a hygiene appointment: Pathology not visible to the hygienist, such as interproximal decay

What European body recommends both supra- and subgingival plaque removal: European Workshop on Periodontology

What is the clinical sequence leading to periodontitis: Plaque → calculus → gingivitis → periodontitis → bone loss

How long has Smile Solutions been operating: Since 1993

Where is Smile Solutions located: Level 1, 220 Collins Street, Melbourne CBD

How many clinicians does Smile Solutions have: 60 or more

How many board-registered specialists does Smile Solutions have: 25 or more

How many patients has Smile Solutions treated: Over 250,000

Is a referral required to book a specialist at Smile Solutions: No

What is Smile Solutions' phone number: 13 13 96

Smile Solutions scale-and-clean: the clinical case for professional hygiene appointments

Most people understand, at least in principle, that they should see a dentist regularly. Fewer truly grasp why brushing and flossing — even when done perfectly, twice a day — simply cannot substitute for a professional scale-and-clean. The answer lies in a biological process that begins within 24 hours of your last meal and, left unchecked, ends in irreversible bone loss around your teeth.

Smile Solutions is Melbourne CBD's comprehensive dental practice, and this article walks you through the science of calculus formation, the clinical steps of a professional hygienist appointment, and why the consequences of skipping routine cleans extend well beyond a dull smile. For patients at Smile Solutions Melbourne CBD, this is the foundational knowledge behind every hygiene appointment we provide — and the reason it is always paired with a comprehensive examination (see our guide on Dental Check-Ups at Smile Solutions Melbourne CBD: What to Expect at Every Stage).

What is dental calculus — and why can't you brush it off?

Dental calculus, also known as tartar, is hardened dental plaque caused by mineral precipitation from saliva and gingival crevicular fluid onto plaque deposits on the teeth. And this is not a slow, gradual process. Calculus formation begins when minerals in saliva — primarily calcium and phosphate — deposit into dental plaque. This starts within 48 hours of plaque formation and can reach significant hardness within just 10 to 14 days.

Once mineralisation occurs, the deposit is structurally transformed. Brushing and flossing can remove the plaque from which calculus forms; however, once formed, calculus is too hard and too firmly attached to be removed with a toothbrush. This is not a matter of brushing harder or more frequently — once plaque has mineralised into calculus, it is bonded to the tooth surface and cannot be removed by brushing, flossing, or any home remedy. Professional dental instruments — ultrasonic scalers and hand curettes — are the only tools equal to the task.

The composition of calculus: more than just mineral

Dental calculus is 70–80% inorganic, with the remainder comprised of organic components. The precipitation process kills the bacterial cells within dental plaque, but the rough, hardened surface that forms provides an ideal environment for further plaque accumulation. This is the compounding problem: calculus does not simply build up — it actively accelerates the accumulation of new plaque, creating a self-reinforcing cycle of buildup and inflammation.

Calculus can form along the gumline, where it is referred to as supragingival ("above the gum"), and within the narrow sulcus between the teeth and the gingiva, where it is referred to as subgingival ("below the gum"). These two types differ significantly in their clinical implications — and in the skill required to remove them.

Supragingival vs. subgingival calculus: a clinical distinction that matters

Understanding the difference between these two deposit types helps you appreciate what your hygienist is actually doing during a scale-and-clean — and why their expertise matters.

Supragingival calculus forms most heavily on the buccal (cheek) surfaces of the upper molars and on the lingual (tongue) surfaces of the lower front teeth — areas close to the salivary gland ducts, where mineral-rich saliva naturally pools.

Subgingival calculus is clinically more dangerous. There is overwhelming evidence that subgingival calculus, residual or otherwise, is directly related to inflammation and disease progression. Despite short-term favourable responses following scaling and root planing, the periodontal literature has been consistent in noting the presence of residual subgingival calculus associated with ongoing inflammation. This is particularly true for pockets of 5 mm or more and is likely responsible, at least in part, for the failure of therapy, as well as the recurrence and progression of disease.

How a professional scale-and-clean works: a step-by-step clinical breakdown

A scale-and-clean appointment at Smile Solutions is far more than a simple "polish." It is a structured clinical procedure performed by a trained dental hygienist or dentist, comprising five distinct phases — each purposeful, evidence-based, and tailored to your individual needs.

Step 1: Periodontal assessment and charting

Before any instrument touches a tooth, your hygienist performs a thorough clinical assessment. This includes probing around each tooth to measure the depth of the gingival sulcus — the space between the tooth and the surrounding gum. A healthy sulcus depth is 1–3 mm; readings of 4 mm or more indicate a developing periodontal pocket where subgingival calculus may be harbouring pathogenic bacteria.

This assessment directly informs the scale-and-clean that follows. If your readings are all under 3 mm, a standard supragingival clean is appropriate; if you have pockets of 4–6 mm, subgingival debridement may be required as part of the same appointment. Your hygienist uses this information to personalise every step of your care.

Step 2: Supragingival scaling

Ultrasonic instruments are the principal treatment modality for removing plaque and calculus. These power-driven instruments oscillate at very high speeds, causing micro-vibrations that aid in calculus and subgingival plaque removal. At Smile Solutions, this phase typically uses a piezoelectric or magnetostrictive ultrasonic scaler, which simultaneously delivers a fine water spray to flush debris and cool the tip. Hand instruments — specifically sickle scalers — are then used to access interproximal surfaces (between teeth) where ultrasonic tips cannot reach as effectively.

Step 3: Subgingival debridement

For patients with any degree of gingival pocket depth, your hygienist will extend instrumentation carefully below the gumline. Scalers and curettes provide the most access to subgingival calculus, and curettes can be used for root planing and effective debridement of subgingival calculus. This phase requires considerable tactile precision — your clinician is working without direct line of sight, relying on feel to detect and remove calculus from root surfaces with care.

Guidelines from the European Workshop on Periodontology recommend that professional mechanical plaque removal be performed both supragingivally and sub-marginally until all plaque and calculus have been removed.

Step 4: Polishing

Once scaling is complete, your hygienist uses a rubber cup and prophylaxis paste to polish tooth surfaces. This removes residual extrinsic staining from coffee, tea, red wine, or tobacco, and smooths the enamel surface to slow the re-adhesion of plaque. Polishing is a finishing step, not the primary therapeutic one — the calculus removal in Steps 2 and 3 is the core clinical intervention.

Step 5: Fluoride application

Fluoride varnishes are professionally applied topical agents that deliver high concentrations of fluoride directly to your tooth surface. Formulated as 5% sodium fluoride varnish, they contain approximately 22,600 ppm fluoride. These varnishes adhere to enamel, allowing sustained fluoride release over several hours, enhancing remineralisation and reducing cariogenic bacterial activity.

The evidence for in-office fluoride application is solid. Clinical evidence shows that fluoride varnish applications performed two to four times per year can reduce the incidence of dental caries in permanent teeth by up to 43%. For patients at elevated caries risk — those with a history of decay, exposed root surfaces, or dry mouth — evidence-based guidelines suggest fluoride applications at least every 3–6 months.

The hygienist's role vs. the dentist's role in a clean

Patients sometimes ask whether it matters if their clean is performed by a hygienist or a dentist. In clinical terms, a qualified dental hygienist is specifically trained in periodontal instrumentation and is often better positioned than a general dentist to dedicate the full appointment time to thorough scaling and debridement.

Plaque and calculus deposits are a major aetiological factor in the development and progression of oral disease. An important part of the scope of practice of a dental hygienist is the removal of plaque and calculus deposits, achieved through the use of specifically designed instruments for debridement of tooth surfaces.

At Smile Solutions, hygiene appointments are structured to allow your hygienist adequate time for thorough charting, instrumentation, and patient education — rather than compressing the clean into the tail end of a general check-up. Your dentist's role is to review the hygienist's findings, assess for pathology not visible to the hygienist (such as interproximal decay on radiographs), and determine whether further periodontal treatment is needed. This collaborative model reflects best-practice general dentistry (see our guide on What Is General Dentistry? Core Services, Scope & Why It's the Foundation of Oral Health).

From calculus to gum disease: the progression you can interrupt

A routine scale-and-polish treatment involves scaling or polishing, or both, of the crown and root surfaces of teeth to remove local irritational factors — plaque, calculus, debris, and staining — without periodontal surgery or adjunctive periodontal therapy. The reason this routine intervention matters so profoundly is what happens when it is skipped.

The mineralisation process kills the bacterial cells within dental plaque, but the rough, hardened surface that forms provides an ideal surface for further plaque formation, leading to calculus buildup that progressively compromises the health of your gingiva. The clinical sequence is entirely predictable:

1. Plaque accumulates on tooth surfaces within hours of eating
2. Plaque mineralises into calculus within 10–14 days if not removed
3. Calculus irritates the gingiva, triggering an inflammatory immune response — gingivitis
4. Untreated gingivitis allows calculus to extend subgingivally, deepening periodontal pockets
5. Subgingival calculus and bacterial toxins trigger destruction of the periodontal ligament and alveolar bone — periodontitis

The population burden of this progression in Australia is substantial. In 2017–18, around one-third (30%) of adults aged 15 years and over had moderate or severe periodontitis, up from around one-quarter (23%) in 2004–06. Prevalence by age group in 2017–18: 12% in 15–34 year-olds, 33% in 35–54 year-olds, 51% in 55–74 year-olds, and 69% in those aged 75 and over.

The critical clinical point here is that gingivitis is reversible; periodontitis is not. Once alveolar bone has been lost to periodontitis, that bone does not regenerate through scaling alone. Regular hygiene appointments intercept the disease process at the gingivitis stage — before permanent structural damage occurs. For a deeper look at this progression, see our companion article Gum Disease Explained: Recognising Gingivitis and Periodontitis Before They Cause Permanent Damage.

How often do you actually need a professional clean?

Routine scaling and polishing reduces calculus levels compared with no routine scaling and polishing, with six-monthly treatments reducing calculus more than 12-monthly treatments over two to three years of follow-up (high-certainty evidence).

For most healthy adults, a six-monthly schedule is appropriate and aligns with the twice-yearly benefit cycles of most Australian private health insurance extras policies. That said, your frequency should be individualised. Thorough removal of calculus deposits at frequent intervals is what effectively manages disease and maintains oral health. The recommended frequency of dental hygiene treatment is made by a registered professional and depends on your individual needs — factors include your overall health status, tobacco use, amount of calculus present, and adherence to a professionally recommended home care routine.

Patients who may benefit from three- to four-monthly appointments include:

• Those with a history of periodontitis or active gum disease
• Smokers, who accumulate calculus faster and have compromised gingival healing
• Patients with diabetes, which amplifies the inflammatory response to periodontal bacteria
• Heavy calculus formers due to saliva composition or genetics
• Patients with fixed orthodontic appliances, which create additional plaque-retention sites

For guidance on what your private health insurance covers for hygiene appointments, see our guide on Dental Health Fund & Private Health Insurance at a Melbourne CBD Dentist: Maximising Your Cover.

What patients often get wrong about home care

The most common misconception is that excellent home care makes professional cleans unnecessary. This conflates two genuinely distinct processes. Your daily brushing and flossing removes plaque — the soft, removable biofilm. It cannot remove calculus — the mineralised, tooth-bonded deposit that requires professional mechanical instrumentation.

Tartar-control toothpastes contain ingredients like pyrophosphates or zinc citrate that reduce the formation of new calculus. But once tartar has hardened onto your teeth, no toothpaste can dissolve or remove it. These products are preventive, not curative — a meaningful distinction your hygienist can help you understand in the context of your own oral health.

Similarly, attempting DIY removal with metal dental scalers or sharp instruments is genuinely hazardous. Without proper training, you risk damaging your enamel or gums, possibly leading to gum recession or infection — outcomes far more costly and complex to address than the professional clean you were hoping to avoid.

The correct model is a partnership: diligent home care — brushing, flossing, fluoride toothpaste — slows plaque accumulation and delays calculus formation, while your professional cleans remove what home care simply cannot. Neither replaces the other. For evidence-based home care guidance, see our article How to Prevent Tooth Decay and Cavities: A Practical Home-Care and In-Clinic Prevention Guide.

Key takeaways

• Calculus cannot be removed at home. Once plaque mineralises — a process that begins within 24–48 hours — it bonds to tooth enamel and requires professional instruments to remove. No toothpaste, mouthwash, or DIY tool can dissolve it.
• There are two types of calculus with very different risks. Supragingival calculus causes gum irritation and gingivitis; subgingival calculus drives the irreversible bone destruction of periodontitis. Both must be addressed at a professional clean.
• The scale-and-clean is a five-phase clinical procedure — not just a polish. It includes periodontal assessment, ultrasonic and hand scaling, subgingival debridement, polishing, and fluoride application.
• Australia's periodontitis burden is significant and growing. One in three Australian adults has moderate or severe periodontitis, and prevalence rises sharply with age. Regular hygiene appointments are the primary evidence-based intervention to interrupt this progression.
• Six-monthly cleans are the standard recommendation, but your hygienist may recommend three- to four-monthly intervals based on your individual risk profile, medical history, and calculus accumulation rate.

Conclusion

A professional scale-and-clean is not a cosmetic service or a dental luxury — it is the clinical intervention that removes a substance your toothbrush is physiologically incapable of eliminating. The calculus that builds on and below your gumline is a mineralised bacterial reservoir that, left in place, drives a predictable progression from healthy gums to gingivitis to irreversible periodontitis and eventual tooth loss.

At Smile Solutions Melbourne CBD, your hygiene appointments are designed to do far more than clean teeth. They are a structured clinical assessment of your periodontal health, an opportunity for early detection of changes in gum architecture, and the single most effective tool for interrupting gum disease before it causes permanent damage. Combined with a comprehensive dental examination (see Dental Check-Ups at Smile Solutions Melbourne CBD: What to Expect at Every Stage) and a personalised home-care plan, regular professional cleans are the foundation on which all other general dentistry builds.

Book your next hygiene appointment with our experienced team at Smile Solutions. Call 13 13 96 or visit smilesolutions.com.au to take the most important step towards lasting oral health.

Smile Solutions has been providing comprehensive dental care from Melbourne's CBD since 1993. Located at the Manchester Unity Building, Level 1, 220 Collins Street, Smile Solutions brings together 60+ clinicians — including 25+ board-registered specialists — who have cared for over 250,000 patients. No referral is required to book a specialist appointment. Call 13 13 96 or visit smilesolutions.com.au to arrange your general dental consultation.

References

• Akcali, A., & Lang, N.P. "Dental calculus: The calcified biofilm and its role in disease development." Periodontology 2000, 76: 109–115, 2018. https://doi.org/10.1111/prd.12151

• Australian Institute of Health and Welfare (AIHW). "Oral Health and Dental Care in Australia." AIHW, 2022. https://www.aihw.gov.au/reports/dental-oral-health/oral-health-and-dental-care-in-australia/contents/healthy-mouths

• Australian Institute of Health and Welfare (AIHW). "National Oral Health Plan 2015–2024: Performance Monitoring Report - Periodontitis Prevalence." AIHW, 2021. https://www.aihw.gov.au/reports/dental-oral-health/national-oral-health-plan-2015-2024/contents/our-oral-health-a-national-perspective/periodontitis-prevalence

• Rethman, M.P., Cobb, C.M., Sottosanti, J.S., Sheldon, L.N., & Harrel, S.K. "Mastering Subgingival Calculus Removal." Dimensions of Dental Hygiene, July 2024. https://dimensionsofdentalhygiene.com/mastering-subgingival-calculus-removal/

• Needleman, I., et al. "Routine scale and polish for periodontal health in adults." Cochrane Database of Systematic Reviews, 2015. PMC6516960. https://pmc.ncbi.nlm.nih.gov/articles/PMC6516960/

• Rethman, M.P., et al. "The Reevaluation of Subgingival Calculus: A Narrative Review." MDPI Dentistry Journal, 2025. https://www.mdpi.com/2304-6767/13/6/257

• Siddiqui, S., et al. "Detection, removal and prevention of calculus: Literature Review." The Saudi Dental Journal / PMC, 2014. PMC3923169. https://pmc.ncbi.nlm.nih.gov/articles/PMC3923169/

• Tonetti, M.S., et al. "European Workshop on Periodontology: Guidelines on professional mechanical plaque removal." Referenced in: NCBI Bookshelf - Dental Scaling and Root Planing for Periodontal Health, 2016. https://www.ncbi.nlm.nih.gov/books/NBK401542/

• Cleveland Clinic. "Tartar on Teeth (Dental Calculus): Causes & Removal." Cleveland Clinic Health Library, 2024. https://my.clevelandclinic.org/health/diseases/25102-tartar

• Weyant, R.J., et al. "Topical fluoride for caries prevention: executive summary of the updated clinical recommendations and supporting systematic review." Journal of the American Dental Association, 144(11): 1279–91, 2013. Referenced in: ADA Dental Quality Alliance. "Topical Fluoride for Adults at Elevated Caries Risk." American Dental Association, 2024.

• Yıldırım, S., et al. "Fluoride in Dental Caries Prevention and Treatment: Mechanisms, Clinical Evidence, and Public Health Perspectives." MDPI Healthcare, 2025. https://www.mdpi.com/2227-9032/13/17/2246

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Dental calculus — scientific/clinical facts

• Dental calculus is also known as tartar
• Calculus formation begins within 48 hours of plaque formation
• Calculus can reach significant hardness within 10 to 14 days
• Calculus is 70–80% inorganic by composition
• Primary minerals involved in calculus formation are calcium and phosphate from saliva
• Brushing and flossing cannot remove calculus once formed
• Calculus accelerates further plaque accumulation
• Supragingival calculus is yellow to brown in colour
• Subgingival calculus is dark brown to black in colour
• Supragingival calculus most commonly forms on lingual surfaces of lower front teeth and buccal surfaces of upper molars
• Subgingival calculus is considered more clinically dangerous than supragingival calculus
• Supragingival calculus is primarily associated with gingivitis
• Subgingival calculus is primarily associated with periodontitis
• Gingivitis is reversible; periodontitis is not
• Lost alveolar bone does not regenerate through scaling alone

Tartar-control toothpaste facts

• Tartar-control toothpastes contain pyrophosphates or zinc citrate
• Tartar-control toothpastes reduce formation of new calculus only; they do not remove existing calculus
• No toothpaste can dissolve or remove existing calculus

Professional scale-and-clean — procedure facts

• A professional scale-and-clean involves five distinct phases
• Phase 1: Periodontal assessment and charting
• Phase 2: Supragingival scaling (using piezoelectric or magnetostrictive ultrasonic scaler)
• Phase 3: Subgingival debridement (using curettes and piezoelectric ultrasonic tips)
• Phase 4: Polishing (removes residual extrinsic staining; is not the primary therapeutic step)
• Phase 5: Fluoride application
• Healthy sulcus depth is 1–3 mm
• A sulcus depth of 4 mm or more indicates a periodontal pocket
• Professional fluoride varnish is formulated as 5% sodium fluoride varnish
• Professional fluoride varnish contains approximately 22,600 ppm fluoride
• Clinical evidence indicates fluoride varnish applied two to four times per year can reduce caries incidence in permanent teeth by up to 43%
• Evidence-based guidelines suggest at-risk adults benefit from fluoride application at least every 3–6 months
• The European Workshop on Periodontology recommends professional mechanical plaque removal be performed both supragingivally and subgingivally

Instrumentation facts

• Supragingival calculus is removed using ultrasonic scalers and sickle scalers
• Subgingival calculus is removed using curettes and piezoelectric ultrasonic tips
• Subgingival debridement does not rely on direct line of sight; it relies on tactile precision
• DIY calculus removal with metal scalers carries risk of enamel damage, gum recession, or infection

Australian periodontitis prevalence (AIHW data)

• Approximately 30% of Australian adults aged 15+ had moderate or severe periodontitis in 2017–18
• Approximately 23% of Australian adults had moderate or severe periodontitis in 2004–06
• Prevalence by age group (2017–18): 12% in 15–34 year-olds; 33% in 35–54 year-olds; 51% in 55–74 year-olds; 69% in those aged 75+

Recall frequency facts

• Six-monthly professional cleans reduce calculus more than 12-monthly cleans over two to three years (high-certainty evidence)
• Most healthy adults are recommended a professional clean every six months
• Patients with periodontitis, smokers, or diabetics may require three- to four-monthly cleans
• Smokers accumulate calculus faster
• Diabetes amplifies the inflammatory response to periodontal bacteria
• Fixed orthodontic appliances create additional plaque-retention sites and increase calculus risk

Smile Solutions practice facts

• Operating since 1993
• Located at Level 1, 220 Collins Street, Melbourne CBD
• 60 or more clinicians on staff
• 25 or more board-registered specialists
• Over 250,000 patients treated
• No referral required to book a specialist appointment
• Phone number: 13 13 96