A real case study from our dental clinic in Shivaji Nagar, Yavatmal, on catching a deep cavity early and treating it conservatively.
By Dr. Rekha Prashant Kasare, Kasare Hospital
A patient in her mid-thirties walked into our dental clinic in Shivaji Nagar, Yavatmal complaining of persistent food lodgement between two back teeth and mild sensitivity to cold water. She had ignored it for several months, assuming it was simply a gap that needed occasional flossing. On examination and radiographic evaluation, we found a deep cavity extending close to the pulp chamber — the layer of the tooth housing nerves and blood vessels. At this depth, many clinics would move straight to root canal treatment. Instead, we chose a conservative, pulp-protective approach using Biodentine and a composite restoration, and the tooth has remained symptom-free at every follow-up since.
This case is a good illustration of why early diagnosis and the right restorative material matter as much as the dentist's skill. As a Dental Surgeon trained in microendodontics and restorative dentistry, I want to walk you through what happened, why it worked, and when a filling can genuinely spare you a root canal.
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Cavities form when acid-producing bacteria in dental plaque break down tooth enamel and dentine over time. Left unchecked, decay can travel from the enamel surface down into the dentine and, eventually, close to the pulp. Deep cavities are especially common between back teeth (molars and premolars), where tight contact points trap food debris.
Frequent sugar or starch intake without adequate brushing
Weak or open contact points between adjacent teeth, causing repeated food lodgement
Deep pits and fissures on chewing surfaces that trap plaque
Old, worn-out, or leaking fillings that allow bacteria to re-enter
Reduced saliva flow, which normally helps neutralise acids
Food lodgement between teeth is often the first noticeable symptom of an early cavity or a weakening contact point — it's usually not "just a gap," and worth having checked before it progresses.
Tip: If food keeps getting stuck in the same spot between two teeth every time you eat, don't just keep flossing it out — get the contact point examined. It's frequently an early sign of decay forming beneath the surface.
Deep cavities don't always announce themselves with dramatic pain. Watch for:
Repeated food lodgement in the same spot between two teeth
Sensitivity to cold, hot, or sweet foods that lingers after the stimulus is removed
A visible dark spot, pit, or hole on the tooth surface
Mild, intermittent ache when chewing on that side
Bad breath or a persistent unpleasant taste localised to one area
Lingering sensitivity and spontaneous throbbing pain are the two symptoms that most reliably suggest the decay has reached, or is close to, the pulp — this is the window where a conservative filling can still work, before root canal treatment becomes the only option.
At our clinic, every suspected cavity is assessed with a clinical examination alongside an intraoral X-ray to map exactly how deep the decay has travelled and how close it sits to the pulp. This step is what allows us to decide, case by case, whether a tooth can be treated with a filling and a pulp-protective liner, or whether the pulp is already irreversibly affected and root canal treatment is the safer route. Skipping this diagnostic step is one of the most common reasons deep cavities are either over-treated with unnecessary root canals or under-treated with fillings that fail within months.
Not every deep cavity needs the same treatment. Here is how the three main options compare for a cavity that has progressed close to the pulp.
| Option | Best suited for | What it involves |
|---|---|---|
| Composite restoration | Moderate to moderately deep decay, pulp not yet affected | Decay removed, tooth-coloured resin bonded and shaped in one sitting |
| Biodentine + composite restoration | Deep decay very close to the pulp, pulp still healthy or only mildly inflamed | Biodentine placed as a protective liner over the near-exposed pulp, then sealed with a composite filling |
| Root canal treatment | Pulp already infected, irreversibly inflamed, or the tooth has spontaneous/night pain | Infected pulp tissue removed, canal cleaned and sealed, usually followed by a crown |
In this patient's case, the pulp was still vital and only mildly irritated, with no history of spontaneous or night-time pain — exactly the profile where Biodentine can be used as a bioactive liner to protect and encourage healing of the remaining dentine, avoiding the need to remove the nerve altogether. If you'd like to understand the alternative path in more depth, our detailed guide on root canal treatment and re-treatment covers what that procedure involves and when it becomes unavoidable.
Local anaesthesia: The area is numbed so the procedure is pain-free.
Decay removal: All infected dentine is carefully cleaned out under magnification, preserving as much healthy tooth structure as possible.
Pulp protection with Biodentine: A thin layer of Biodentine, a calcium-silicate based material, is placed directly over the deepest part of the cavity to seal and protect the pulp and support natural dentine repair.
Composite restoration: Once the Biodentine has set, a tooth-coloured composite resin is bonded in layers to rebuild the tooth's shape, contact point, and bite.
Finishing and polishing: The restoration is checked for bite alignment and polished to a smooth finish, which also helps prevent food lodgement recurring at that spot.
The entire procedure was completed in a single visit at our dental filling chair, with no need for a second sitting or a follow-up crown, which is typically required after root canal treatment.
Recovery after a composite-Biodentine restoration is typically straightforward. Mild sensitivity to cold for a day or two is normal and settles on its own. We generally advise:
Avoiding very hard or sticky foods on that side for the first 24 hours
Continuing gentle brushing twice daily and flossing carefully around the restored tooth
Coming back for a review if sensitivity worsens or persists beyond a week
Scheduling routine check-ups so early decay is caught before it becomes deep again
Tip: Use interdental brushes or floss daily around teeth that have had food lodgement issues before — a restored contact point still needs consistent cleaning to stay healthy long-term.
Warning: Spontaneous throbbing pain, pain that wakes you at night, visible facial swelling, or pus discharge near a tooth are signs the pulp may already be infected. These need urgent evaluation — delaying can turn a treatable cavity into an emergency requiring root canal treatment or extraction.
The takeaway from this case is simple: the earlier a deep cavity is examined, the more conservative and predictable the treatment can be. If you are in or around Shivaji Nagar and searching for a "tooth filling near me," don't wait for the pain to become constant.
As the Dental Surgeon leading dental care at Kasare Hospital, I bring over 15 years of clinical experience, with focused training in microendodontics, dental implantology, and cosmetic and aesthetic dentistry from mentors and institutions across Mumbai, Nagpur, and Gujarat. Our clinic follows an ethical, patient-centred approach — we explain every option, including conservative ones like Biodentine restorations, before recommending more invasive treatment.
Kasare Hospital itself has treated over 75,000 patients since it was established in 2014, and operates under NABH-standard protocols, with in-house diagnostic imaging and lab facilities that support same-day evaluation and treatment. Whether you need a straightforward teeth cleaning, a composite restoration, or are exploring a dental implant after tooth loss, our team at the dental care department is here to guide you through it. You can also view our full clinical team on the doctors page, or reach out directly via our contact page to book a consultation.
