Unilateral cheek swelling and lip tingling three days after a dental implant
Ms Andreou, 47, arrives for a 60-minute lymphatic drainage and microcurrent facial. Three days ago she had a lower-left molar implant. Since yesterday she has had swelling over the left cheek, tingling and numbness of the left upper lip and cheek, a temperature of 37.8 °C and pain when biting. She asks you to "drain the swelling" because a friend told her microcurrent speeds healing. She takes ibuprofen, has no known allergies, and refuses to reschedule because she is a bridesmaid in two days. On observation the left cheek is warm, erythematous and swollen, with a firm, tender area near the nasolabial fold; the submandibular nodes are tender but not enlarged. There is no visible pus, no trismus and no eye involvement. The skin is intact apart from a small scab at the implant site inside the mouth, which you do not inspect.
1. How do you interpret the swelling and the tingling, and which anatomical structures explain where the symptoms appear?
Read the worked answer
The picture is not lymphoedema and not a treatment side effect waiting to be drained. A warm, erythematous, tender swelling with fever and tender submandibular nodes, starting 48–72 hours after surgery, points to an acute inflammatory/infectious process of odontogenic origin spreading into the buccal space.
The distribution matters. Tingling of the upper lip and cheek follows the maxillary division (V2) of the trigeminal nerve, notably the infraorbital and zygomaticofacial branches; a pure inferior alveolar or mental nerve injury from a lower molar implant would numb the lower lip and chin, not the upper lip. Upper-lip involvement therefore suggests inflammation or pressure spreading superiorly, which is more concerning than a simple local haematoma.
Differentials to keep in mind: post-surgical haematoma (usually no fever, no warmth), local anaesthetic-related numbness (would have resolved), nerve trauma (sensory only, no fever), and spreading infection. Because infection can track to the infratemporal and periorbital spaces, I would ask directly about trismus, difficulty swallowing, eye swelling, double vision and rapidly spreading redness. Any of these converts this from "refer soon" to "urgent same-day medical/dental assessment". My role is recognition and referral, not diagnosis or drainage.
2. How do you handle the appointment, the client's insistence, and the record?
Read the worked answer
I decline to perform the treatment today and explain why in plain language: lymphatic drainage and mechanical massage over an acute, warm, tender swelling can move inflammatory material along the lymphatic pathways and increase blood flow to the area; microcurrent over infected, febrile tissue is equally inappropriate, and firm palpation of tender nodes adds nothing. This is a contraindication, not a preference.
Practical steps:
- With her permission, telephone the treating dentist or oral surgeon the same day and describe the findings and temperature; give her a short written note stating the observations and that treatment was declined pending dental review.
- Advise urgent dental or medical review, and give safety-net instructions: return immediately/A&E if she develops trismus, difficulty swallowing, eye swelling, spreading redness or fever above 38 °C.
- Waive any late-cancellation fee, offer the first available slot after she is cleared, and book a 24-hour follow-up call.
Record objectively: vital signs, site, colour, warmth, extent, nodal findings, exactly what she asked for, the advice given, who was contacted and when, and that she was told to seek dental review. Avoid diagnostic labels such as "abscess" - write "suspected post-implant infection, referred". Note her refusal to reschedule in her own words. No photographs for marketing.