What if the tray is the reason your whitening results are inconsistent?

Why would a dentist who owns a whitening lab — and holds four patents on making bleaching trays — tell you to skip the tray?

Trayless whitening does not mean strips. It means the patient puts in a retractor and paints the gel directly onto the teeth, twice a day, for half an hour. No impression, no lab bill, no two-week wait, and no soft plastic reservoir quietly absorbing your peroxide.

This is Part 1 of a two-part conversation with Dr Wyman Chan and Dr Elvis Law, recorded live in their central London whitening practice. Wyman has done nothing but whitening since 2002, has a PhD on the efficacy and safety of whitening processes, and — despite owning the lab that makes the trays — now does most of his cases without one. Elvis trained under him and reckons around 90% of his own cases are now trayless.

Part 1 is the mechanism, the protocol and an honest list of who it doesn’t suit. Part 2 takes it into the hard cases.

Protrusive Dental Pearl: Let the Patient Pick the Shade

Most of us ask “how white do you want to go?”, get a laugh about Hollywood white or Simon Cowell white, then hold a B1 tab against the canine and call that the destination. Try flipping it.

Under corrected light, record where the patient is now. Then hand over the whole shade guide, arranged by value, and let them choose the tab they want to reach. Photograph both.

This is the VITA Shade guide arranged by value:

B1 → A1 → B2 → D2 → A2 → C1 → C2 → D4 → A3 → D3 → B3 → A3.5 → B4 → C3 → A4 → C4

Two things change. You now know the target precisely instead of inferring it, and you can track progress against a fixed reference. Most patients land on B1 — it’s the last shade before the bleach range, and it reads natural rather than veneered. Some will point at 0M1 and that’s a different conversation, which is exactly the point.

Because whatever they choose dictates how many weeks, how much gel and how many reviews the case needs — and therefore what it should cost. A single flat whitening fee assumes every case takes the same work. They don’t. Someone starting at C4 who wants a bleach shade can get there, but it takes more gel, more time, more reviews and probably a protocol change along the way. Price that honestly.

Only you can decide what the tiers look like in your practice. But it might be worth sitting down as a team of dentists and therapists and asking: how are we delivering whitening? Two tiers? More? Based on what?

What You’ll Take From This Episode

Highlights of This Episode

UK Dentists:

In the UK you need the Get2Smile Kit which is 6% formulation applied twice daily for 30 minutes.

Head to directoralcare.com and register for a free professional account. Approval unlocks the full shop, pricing, offers and their upcoming educational courses.

At checkout, use code: DOCSUMMER20

The Trayless whitening system is called Get2Smile.

International Dentists wishing to offer Get2Smile, please enquire from Dr Chan’s website. The international version uses 10% formulation applied for 15 minutes, twice daily.

📌 Want to learn directly from Dr Wyman Chan? Join him for Redefining Early Caries Management and Aesthetic Dentistry in Shanghai, China, on 20–21 October 2026.

Saturday 5th September London, UK CPD EVENT:

Join Dr Wyman Chan for an exciting event focused on redefining the management of dental plaque-induced oral diseases.

The session will include a live lecture, clinical demonstration, and the opportunity to take part in practical, hands-on training. Dr Wyman Chan will be joined by Dr Niki Shah and Dr Elvis Law, who will also showcase their clinical cases.

Want more?

If you enjoyed this episode, check out: MAGIC Teeth Whitening with Dr. Wyman Chan – PDP245 — Wyman’s first Protrusive episode, covering whitening myths, sensitivity, and whether in-office lights do anything at all.

Tags

#PDPMainEpisodes 

Listen, Subscribe, Earn CPD

Listen: Subscribe to the Protrusive Dental Podcast on Spotify, Apple Podcasts, or YouTube.

This episode is eligible for 1 CE credit via the quiz on Protrusive Guidance.

This episode meets GDC Outcomes C.

AGD Subject Code: 780 Esthetics/Cosmetic Dentistry.

Aim & Learning Outcomes

Aim: To give dental practitioners a mechanism-led understanding of external tooth whitening delivered without a tray — how gel containment and contact time influence sensitivity and efficiency, how formulation constrains the delivery method, and how to select, sequence and price a whitening case around the patient’s chosen target shade.

Learning Outcomes — by the end of this episode, dentists will be able to:

Just qualified — so why does it feel like the learning is only just beginning?

What should you actually focus on in year one: the flawless dentistry on your feed, or something far less glamorous?

How do you tell a patient their nerve might die — without it sounding like YOUR fault?

And when a patient says “just do whatever you think” — what do you say back?

This is the conversation every new dentist needs and every experienced one recognises. Our guest is Dr Emma Hutchison — a former dental nurse who trained at the University of Glasgow, and has been the face of the Protrusive Students series across her studies. We recorded in her final weeks of dental school, right on the threshold of practice, and talked through everything the syllabus skips: the safe-beginner mindset, what to learn (and what to ignore) early on, how to protect your standards under time pressure, which cases to take on, and how to talk to patients about risk, cost and consent so the words actually land. If you’re fresh out, this one hits hard. If you’re an oldie, it’s a trip down memory lane — and a reminder of how far you’ve come.

Protrusive Dental Pearl: Predict the Complication Before It Happens

A communication pearl for every deep restoration. When a filling sits close to the nerve — a big cavity, a crack — name the likely complication before it happens. Show the patient the images, then tell them what to expect: a twinge to cold or hot that can linger a few days, so keep taking painkillers and keep the area clean. And warn them what a red flag looks like: a severe throbbing ache keeping them up at night, or pain out of the blue without eating or drinking, means the nerve is struggling and they should call you.

Do this and, if the complication ever arrives, you look like the expert who called it — not someone something went wrong for. Skip it and reception fields the panicked calls instead. It reassures the patient, lowers your callback rate, and quietly reduces your risk profile. Obvious, easy to forget, and worth saying out loud every single time.

What You’ll Take From This Episode

Highlights of This Episode

Dr Emma Hutchison came to dentistry the long way round — from a dental nursing background into dental school at the University of Glasgow, with final-year outreach on the Kintyre peninsula in Campbeltown. She has been the face of the Protrusive Students series throughout her studies, and this episode marks her crossing from student to newly qualified dentist. On behalf of the whole Protruserati: we’re proud of you, Emma.

Become the next Protrusive Student: with Emma qualifying, we’re looking for the next keen student who wants part-time work, an income while studying, and to contribute to Protrusive — or a nudge if you know one. DM the team inside the Protrusive Guidance app.

Resources & Mentions From This Episode

Access the above masterclasses and more when you subscribe to the Ultimate or Infinity plan.

Want more?

If you enjoyed this episode, check out: Periodontics for Beginners – PS008

#PDPMainEpisodes #CareerDevelopment #Communication 

Listen, Subscribe, Earn CPD

Listen: Subscribe to the Protrusive Dental Podcast on Spotify, Apple Podcasts, or YouTube.

This episode is eligible for 0.5 CE credit via the quiz on Protrusive Guidance.

This episode meets GDC Outcomes A and D.

AGD Subject Code: 770 Self-Improvement 

Aim & Learning Outcomes

Aim: To give early-career dentists a practical framework for the transition from dental school to independent practice — how to keep developing, how to protect clinical standards under time pressure, and how to communicate risk and treatment options as part of valid consent.

Learning Outcomes — by the end of this episode, dentists will be able to:

Your patient brushes well, avoids sweets — and still keeps getting decay. What if the answer isn’t in their mouth at all?

What if two inexpensive finger-prick tests told you more about a patient’s gum disease and implant prognosis than anything on the radiograph?

And here’s the uncomfortable one: if the science is this clear, is not checking starting to look like a medico-legal risk? Especially for imlpant surgery!

This is a conversation with Dr Tif Qureshi — the dentist who changed how the profession thinks about the lifelong patient, the envelope of function, and Align, Bleach, Bond. He’s gone down a new rabbit hole: metabolic health. In general practice he’s now doing blood tests — HbA1c and vitamin D — and making the case that the mouth isn’t connected to the body, it is the body. This isn’t about becoming a “biological dentist” (as you’ll hear, Tif is refreshingly blunt about the wilder end of that world). It’s about respecting the biology, screening sensibly, and helping patients where we’re genuinely placed to help.

Protrusive Dental Pearl: Test Yourself First

Before you even think about introducing blood tests for your patients, ask whether you’re checking your own biomarkers at a sensible interval. The deepest way to understand this topic is to learn it on yourself and your family first — run your own HbA1c, vitamin D, iron, and liver and kidney markers, and see what the data tells you.

Start quarterly, like hygienist visits, then stretch to six-monthly or annual once things look good. Getting invested in your own numbers is what makes better food and lifestyle choices actually stick — and it’s the honest starting point for ever offering this to a patient.

What You’ll Take From This Episode

Highlights of This Episode

From the Guest

Dr Tif Qureshi qualified from King’s College London in 1992 and is a Past President of the British Academy of Cosmetic Dentistry. He is Founder and Clinical Director of IAS Academy, best known for pioneering Align, Bleach, Bond and Progressive Smile Design, and as a teacher of the Dahl concept. His current focus is metabolic health in general practice.

👉  IAS Academy — Align, Bleach, Bond, the Dahl concept, and blood-testing / metabolic health training

Coming soon: Join Dr. Tif in one-day metabolic health programme. He has spent years connecting the dots between what’s happening in the mouth and what’s happening in the body. The results are undeniable: better outcomes, stronger case acceptance, and a rock-solid medico-legal position.

This one-day course will change the way you practise. For good.👉Metabolic Health in Dentistry

References & Further Reading

Studies and sources referenced in this episode:

Want more?

If you enjoyed this episode, check out: Why do some Dentists find Dahl Distasteful? – PDP016. 

#PDPMainEpisodes #BeyondDentistry #Communication

Listen, Subscribe, Earn CPD

Listen: Subscribe to the Protrusive Dental Podcast on Spotify, Apple Podcasts, or YouTube.

This episode is eligible for 1.0 CE credit via the quiz on Protrusive Guidance.

This episode meets GDC Outcomes C and A.

AGD Subject Code: 730 Oral Medicine, Oral Diagnosis, Oral Pathology

Aim & Learning Outcomes

Aim: To help dental practitioners understand the link between metabolic health and oral disease, and to evaluate whether simple in-practice biomarker screening has a place in their care of patients.

Learning Outcomes — by the end of this episode, dentists will be able to:

Filling, stainless steel crown, pulpotomy or extraction — how do you actually decide on a deciduous tooth?

Why is the lower first primary molar the one that always seems to flare up?

When should you reach for silver diamine fluoride instead of the drill — and when is a child’s cooperation telling you to change the plan entirely?

And how do you actually do a pulpotomy, step by step, without it blowing up under the crown?

This is a paediatric dentistry masterclass with Dr Nidhi Kotak — “The Baby Tooth Dentist,”. It’s built for the general dentist who treats children and wants clearer rules: when to fill versus crown, how to read the radiograph, silver diamine fluoride, local anaesthetic and behaviour guidance, isolation, and a full pulpotomy and stainless steel crown technique. The through-line is simple — in children you decide fast, protect the airway, and treat for predictability rather than heroics.

Protrusive Dental Pearl: Strategic Flexibility

You cannot be rigid when treating children. The mindset shift is to stop asking “what should be done for this child?” and start asking “what can be done for this child?” With children you have to be fast and efficient, and curveballs are constant — sometimes the parent is harder to manage than the child. So the plan has to bend.

The worked example: you planned a conventional prepped stainless steel crown, but cooperation drops mid-appointment. Rather than abandon the visit, switch to a no-prep whole-crown approach and protect the tooth anyway. It stays in the child’s best interest — and it’s far kinder to your own mental health. It’s a mindset worth carrying into all of dentistry, not just children’s.

What You’ll Take From This Episode

Highlights of This Episode

Dr Nidhi Kotak is a dual US and Canadian board-certified paediatric dentist — a Diplomate of the American Board of Pediatric Dentistry and a Fellow of the Royal College of Dentists of Canada. 

Follow Dr. Nidhi for more paediatric dentistry tips 👉  @babytoothdentist on Instagram

Want more?

If you enjoyed this episode, check out: Zirconia vs Metal Hall Crowns vs Conventional with Dr Tim Keys – PDP227

#PDPMainEpisodes #EndoRestorative

Listen, Subscribe, Earn CPD

Listen: Subscribe to the Protrusive Dental Podcast on Spotify, Apple Podcasts, or YouTube.

This episode is eligible for 1.0 CE credit via the quiz on Protrusive Guidance.

This episode meets GDC Outcomes C 

AGD Subject Code: 430 Pediatric Dentistry.

Aim & Learning Outcomes

Aim: To give dental practitioners a clear, decision-led approach to restorative paediatric dentistry — how to choose between filling, crowning, pulpotomy and extraction, how to manage caries conservatively, and how to carry out a pulpotomy and stainless steel crown safely.

Learning Outcomes — by the end of this episode, dentists will be able to:

How good is your consent for orthodontics — really?

More adults are having ortho, and more GDPs are providing it. So which risks should you be discussing with every single patient — and which ones depend on the person in the chair?

When a case is heading for a big overjet or a tricky rotation, is that a conversation you have at the start, or one you scramble to explain halfway through?

And what actually makes a consent form legally valid — the signature, or everything around it?

This episode brings together two perspectives you don’t often hear in the same room. Dr Zaid Esmail is a specialist orthodontist and founder of the Online Orthodontic Academy, who mentors GDPs through fixed and aligner cases. Dr Neel Jaiswal  returns for the dento-legal view — he’s a dentist and the founder of Professional Dental Indemnity (PDI). Together with Jaz, they get very specific about what individualised consent looks like in practice, and how to build a process your patients remember and a court respects.

Protrusive Dental Pearl: Make Your Patient Feel Unique

It might be your 100th, 500th or 1,000th case — but for the patient in the chair, this is a significant event. Never forget that. A routine extraction is routine for you; for them it’s a big deal, and remembering that makes you a better communicator.

To make a specific risk stick, make the patient feel unique. Point to their OPG: “Your sinus here is actually really interesting,” or “Did you know your roots are unusually long?” Patients remember a risk framed as if they’re a special case far better than a generic warning. Make it personal, and the consent becomes memorable.

What You’ll Take From This Episode

The whole episode turns on one idea: generic, templated consent is no longer defensible — the skill is individualising the form to the patient in front of you. Premium members get the full breakdown; here’s the shape:

Highlights of This Episode:

Dr Zaid Esmail is a specialist orthodontist. He founded the Online Orthodontic Academy to teach GDPs orthodontics — assessment, diagnosis and treatment planning across fixed appliances and aligners — with one-to-one case mentorship. He’s extended a 10% discount to the community with the code PROTRUSIVE.

👉  Online Orthodontic Academy — online ortho mentorship, fixed & aligners, Level 7 Diploma

Dr Neel Jaiswal returned for the dento-legal perspective. He’s a dentist and the founder of Professional Dental Indemnity (PDI), which introduces dentists to insurance-based indemnity cover.

Request a Quote for Insurance and Get £100 off

👉  Professional Dental Indemnity (PDI) — insurance-based dental indemnity

Want more?

If you enjoyed this episode, check out: Consent Is Like An Onion – Are You Consenting Your Patients Correctly? – PDP113

Tags

#PDPMainEpisodes #OrthoRestorative #Communication 

Listen, Subscribe, Earn CPD

Listen: Subscribe to the Protrusive Dental Podcast on Spotify, Apple Podcasts, or YouTube.

This episode is eligible for 0.5 CE credit via the quiz on Protrusive Guidance.

This episode meets GDC Outcomes A

AGD Subject Code: 565 Documentation & Risk Management 

Aim & Learning Outcomes

Aim: To help dental practitioners obtain valid, individualised consent for orthodontic treatment — identifying the risks that apply to every patient, tailoring them to the individual, and structuring a consent process that is both comprehensible to the patient and defensible in law.

Learning Outcomes — by the end of this episode, dentists will be able to:

Ever fancied teaching dental students part time… but no real idea how you’d actually get in?

Are you the kind of person teaching would energise — or quietly drain?

Is a PGCert in dental education actually worth it, or just wishy-washy theory?

And the honest question nobody asks out loud: does it pay anything?

This is an Interference Cast — the non-clinical arm of the podcast — with Dr Rima Hussain, a general dentist who teaches restorative dentistry to undergraduates at King’s a couple of days a week. It’s a candid look at what a career in dental education actually involves: how to get in, who thrives and who burns out, what the work is really like, and the honest truth about the pay and the rewards. The bigger theme: dentistry is a career you can mould in endless directions — and for the right person, teaching is one of the most energising of them.

What You’ll Take From This Episode

The full self-assessment and the step-by-step route into a teaching role are in the Premium Notes. Here’s the shape of what we cover:

Highlights of This Episode

From the Guest

Dr Rima Hussain is a general dentist who also teaches restorative (conservative) dentistry to undergraduates at King’s College London — a route she fell into via tutoring as a teenager and has been in since 2019. Her advice for anyone curious: you’re probably already teaching in some form, so try it; the worst case is you find it isn’t for you.

👉  Reach Rima on Instagram

References & Further Reading

Mentioned in this episode:

Want more?

If you enjoyed this episode, check out: 2 Years Out of Dental School – Insights for New Grads – IC066

#InterferenceCast #CareerDevelopment #BeyondDentistry

Listen, Subscribe, Earn CPD

This episode is eligible for 0.5 CE credit via the quiz on Protrusive Guidance.

This episode meets GDC Outcomes B 

AGD Subject Code: 770 Self-Improvement 

Aim & Learning Outcomes

Aim: To help dentists evaluate a part-time career in dental education — what the role involves, how to obtain one, and how to sustain it alongside clinical practice.

Learning Outcomes — by the end of this episode, dentists will be able to:

Sleep, Airway and Mouth Breathing: An ENT’s Guide for Dentists

Could a “normal” sleep study still be missing your patient’s airway problem?

Why do women and children with real symptoms keep scoring “mild”?

Should a mouth-breathing child see a myofunctional therapist — or an ENT first?

And which four questions screen a child for sleep problems in under a minute?

The roof of the mouth is the floor of the nose — so ENT and dentistry should be in constant dialogue. In practice, they rarely are. In this one, Dr David McIntosh — an Australian ear, nose and throat surgeon with a deep niche in sleep-disordered breathing — makes the case for why that has to change, and gives dentists practical ways to screen and refer. He is direct, analogy-rich and doesn’t mince words; expect a few positions that cut against the grain of how sleep apnoea is usually handled.

Protrusive Dental Pearl: When the Numbers Mislead

Dentists love data — the AHI, the cut-offs (over 5 is mild, over 30 is severe). But take those numbers with a pinch of salt: the thresholds are arbitrary, and a single score tells you nothing about why a patient has the problem.

They don’t account for individual variability — especially in women and children, where a mild score can sit right alongside significant symptoms. Read the number with the anatomy and the phenotype — the clinical signs and the airway assessment — never instead of them.

What You’ll Take From This Episode

This conversation reframes sleep-disordered breathing from a number on a report into something you can localise and refer. 

Highlights of This Episode

From the Guest

Dr David McIntosh is an ear, nose and throat surgeon (MBBS, FRACS, PhD) with a special interest in sleep-disordered breathing and airway obstruction. A self-described compulsive educator, he is the author of several books on Amazon — including dENTal health, on the connection between ENT and dental disease, and Snored to Death, on the lesser-recognised causes of obstructive sleep apnoea in adults.

References & Further Reading

Sources discussed in this episode:

Loved This Episode? Try Next

Airway Dentistry with Jeff Rouse – PDP229

Listen, Subscribe, Earn CPD

This episode is eligible for 1 CE credit via the quiz on Protrusive Guidance.

This episode meets GDC Outcomes C

AGD Subject Code: 730 – Oral Medicine, Oral Diagnosis, Oral Pathology (Sleep medicine)

#PDPMainEpisodes #OralSurgeryandOralMedicine

Aim & Learning Outcomes

Aim: To help dental practitioners recognise sleep-disordered breathing across the whole airway, screen adults and children appropriately, and refer at the right time and to the right clinician.

Learning Outcomes — by the end of this episode, dentists will be able to:

The most important part of your surgery isn’t plugged in, mounted, or calibrated. It’s the person standing beside you.

Have you ever dreaded walking into a beautiful practice with lovely patients — purely because of who you share the surgery with?

What do you actually do, in the moment, when your assistant rolls their eyes at a request for rubber dam?

And should you be friends with your assistant at all — or does that cross a line you’ll regret?

This is an Interference Cast — a non-clinical but deeply practical episode — with Dr. Sarah Braun, a dentist in Australia and a fellow Protrusive Guidance member who DM’d to suggest this very topic. No course, no book, nothing to sell: just two clinicians comparing notes (and the odd scar) on the one relationship that quietly shapes your whole working life. It sits inside this month’s theme of the relationships that support your career.

What You’ll Take From This Episode

The full breakdown is in the Premium Notes; here’s the shape of the thinking that runs through the episode:

Highlights of this episode:

00:00 TEASER
01:13 Why This One Relationship Can Make or Break You
03:49 A Non-Clinical Interference Cast: What to Expect
04:47 Meet the Guest: Nine Years In, City to Country
07:01 A Week in Private Practice
09:15 How Much Does the Dentist–Assistant Relationship Matter?
11:01 Engagement at Work: The Gallup Lens
12:30 People Remember How You Made Them Feel
14:21 When the Relationship Turns Toxic
15:23 The Power Imbalance You Might Not See
18:11 The First-Day Conversation
20:52 Keeping Your Assistant Engaged
22:23 Specific Praise Beats a Vague “Good Job”
23:55 Midroll
27:37 You Can Only Control Yourself
29:34 The Eye-Roll Moment: Let Them, Let Me
31:23 Off Days vs Patterns
32:12 Appreciation, Gifting & Speaking Their Language
35:32 Run the Relationship Like It Matters
36:48 Friends With Your Assistant, or Keep Your Distance?
39:08 A Best Friend at Work: The Engagement Link
41:15 Advice for New Grads: Start With Time Management
44:26 Teaching as a Tool: Show Your Working Out
48:05 Wrap-Up & a Healthy Debate
48:37 CPD Outro & the Protrusive Vault

References & Further Reading:

Sources and further reading from this episode:

Want more?

If you enjoyed this episode, check out: How to Find a Mentor in 5 Seconds Flat! – IC058. 

#InterferenceCast #CareerDevelopment #Communication #BeyondDentistry

Listen, Subscribe, Earn CPD:

This episode is eligible for 0.75 CE credit via the quiz on Protrusive Guidance.

This episode meets GDC Outcomes A and B

AGD Subject Code: 550 Practice Management and Human Relations

Aim & Learning Outcomes:

Aim: To help dental practitioners understand and strengthen the working relationship between dentist and dental assistant — recognising its impact on team engagement, patient experience and personal job satisfaction, and building practical habits to improve it.

Learning Outcomes — by the end of this episode, dentists will be able to:

Is rotary really better than reciprocating?

Can you safely skip the glide path with modern reciprocating systems?

What is the best file system for a GDP who wants predictable endodontic results?

And perhaps the biggest question of all: does the file system matter as much as we think it does?

In Part 2 of the Endo Showdown, Dr Samuel Johnson returns to tackle some of the most common questions dentists have about file systems, glide path preparation, retreatment, and endodontic workflow. From practical negotiation tips to choosing a system that works in your hands, this episode focuses on the decisions that can make endodontics simpler, safer, and more predictable.

Protrusive Dental Pearl

Cut your gutta-percha at the level of the canal orifice and thoroughly clean the pulp chamber before placing the coronal restoration.

⚠️ Leaving gutta-percha and sealer coronally can compromise the coronal seal and promote leakage.

✅ Use isopropyl alcohol to clean resin-based sealer residue before bonding. Water is effective for cleaning bioceramic sealers.

Key Takeaways

Highlights of this episode:

Want more?

Check out the previous episode with Dr. Samuel Johnson: Working Lengths and Troubleshooting Apex Locators – PDP216

🦷 Looking for an endomotor?

Upgrade your endodontic workflow with the Woodpecker Endo Radar Pro. Head to protrusive.co.uk/endomotor and use coupon code PROTRUSIVE at checkout to claim an exclusive discount and your choice of complimentary file system.

🎁 Subscribe to Dr. Samuel Johnson’s amazing YouTube Channel: I Love The Pulp for more helpful endodontics tips and tricks. 

#PDPMainEpisodes #EndoRestorative

This episode is eligible for 0.75 CE credit via the quiz on Protrusive Guidance.

This episode meets GDC Outcomes C

AGD Subject Code: 070 – Endodontics

Aim: To enhance clinicians’ understanding of glide path preparation, rotary and reciprocating instrumentation, canal negotiation, retreatment strategies, and risk management in contemporary endodontic practice.

Dentists will be able to –

Rotary or reciprocating files — which should you actually be using?

Is one safer than the other? Does reciprocation really reduce file separation? Are you choosing your system because it suits the canal anatomy, or because it is simply the one you were taught?

Endodontic file systems can feel like a maze of brands, tapers, alloys, motions and marketing claims. But beneath all that noise, the real question is much more practical: what is your file doing inside the canal, and what compromise are you accepting?

In this episode, Dr Samuel Johnson returns to unpack the Endo Showdown: rotary versus reciprocating files. We cover file motion, glide paths, shaping philosophy, NiTi metallurgy, cyclic fatigue, torsional fatigue, and why no system is perfect.

Protrusive Dental Pearl

A palliative root canal can be useful for an unrestorable tooth if disinfecting the canal allows infection to heal and natural bone to recover before extraction and future implant planning.

⚠️ Do not dismiss root canal treatment purely because the tooth is not a long-term functional restoration.

✅ Where appropriate, consider whether endodontic disinfection could improve the future implant site by allowing natural bone healing.

Key Takeaways

Highlights of the episode:

Want more?

Check out previous episode with Dr. Samuel Johnson: Working Lengths and Troubleshooting Apex Locators – PDP216

🦷 Looking for an endomotor?

Upgrade your endodontic workflow with the Woodpecker Endo Radar Pro. Head to protrusive.co.uk/endomotor and use coupon code PROTRUSIVE at checkout to claim an exclusive discount and your choice of complimentary file system.

#PDPMainEpisodes #EndoRestorative

This episode is eligible for 0.5 CE credit via the quiz on Protrusive Guidance.

This episode meets GDC Outcomes C
AGD Subject Code: 070 Endodontics

Aim: To improve dentists’ understanding of rotary and reciprocating endodontic file systems, including file motion, glide path creation, file metallurgy, fatigue mechanisms, irrigation principles, and practical steps to reduce procedural risks.

Dentists will be able to –