A patient attended the practice for the first time complaining of bleeding when brushing around the wisdom teeth. This had been occurring for several weeks and the patient also described a bad taste in their mouth.
The dentist examined the patient and took an OPG, following which he sent his dental surgery assistant through to the patient with a form to obtain consent for the extraction of all four wisdom teeth. The patient agreed to proceed with the extractions under local anaesthesia. Following the administration of the local anaesthetic, a forceps extraction technique was used instead of a surgical approach.
The extractions were completed with some difficulty, but the teeth were removed in their entirety, postoperative instructions were given, and the patient was discharged. No follow-up review was planned but the patient rang the practice two days later, expressing concern over pain from the jaw on the lower left-hand side, together with some numbness.
The patient was not reviewed until seven days postoperatively, despite the request for an urgent appointment. When she was examined, a diagnosis of infection and inflammation was made, and antibiotics prescribed. The symptoms persisted but no other treatment or follow-up was offered and, by day 12 after the surgery, the patient sought an appointment elsewhere.
Upon examination at the new practice, which included a further OPG, the patient was informed of the presence of a fracture, together with the displacement of the lingual plate. She also had continued numbness. Unfortunately there was a resultant permanent paraesthesia and a debilitating neuropraxia.
The patient was both angry and frustrated when she was informed of the fracture and the likely nerve damage. She felt she had been treated inappropriately and subsequently abandoned by the original dentist, who had made little effort to address her concerns expressed following the extractions.
Some three weeks after the extractions, she had made a formal complaint to the Dental Council (DC) and a claim in negligence was lodged two and a half years later.
Dental Council complaint
The DC complaint was referred through to a full hearing, where it was established that the consent process was not valid and that the clinician lacked the competence to carry out such procedures. It was also determined:
Consent process
There was nothing recorded to demonstrate that the patient was warned of the possible risks and consequences of extracting all four wisdom teeth, in particular 38. In addition, there was no evidence that the patient was offered a specialist referral and both these omissions led to criticism around of the consent process.
Competence
The expert instructed by the DC gave evidence that in his opinion, the curved roots of the 38 were lying close to the inferior dental nerve and that by carrying out an extraction with forceps, the procedure forced one or more of the roots against the nerve. He suggested that if a surgical technique had been adopted, and the roots separated, then elevation of the individual roots would not have caused the injury the patient experienced.
The DC determined that the registrant failed to carry out an adequate preoperative assessment to investigate the potential risks before embarking on the removal of four wisdom teeth in one single visit under local anaesthesia. In addition, the registrant failed to properly execute the removal of the lower left third molar, resulting in inferior dental nerve injury.
The DC stated that meticulous attention to preoperative assessment and delivery of necessary skills is essential for the safety of the patient. As a result, the registrant was suspended for a period of three months.
Potential claim
This case did not take place in New Zealand but if it had, the patient may have been entitled to make a claim under ACC for a treatment injury.
Reflections
Despite support from a highly experienced Dental Protection legal team, the facts of such cases can be indisputable and certain outcomes inevitable. Ensuring fairness and correct procedure together with strong representation are essentials of our service to members but the support for the individual themselves facing such a professional challenge is just as important. DC investigations and claims can have a significant impact upon emotional wellbeing and support from colleagues who understand the implications of these events can be most helpful. Dental Protection also provides a confidential counselling service for members who feel they may benefit from further support.
Learning points
As set out by dental regulators, registrants have a duty to ensure clinical competency with adequate knowledge and skill. Developing further skills through postgraduate education, mentoring and shared experience is part of our own personal development and taking on complex treatments without appropriate consideration and competency may lead to significant impact upon your own registration.
In terms of consent, the case demonstrates that a signature on a form does not in itself prove valid consent has been obtained. Detailing that discussion in the records provides the additional support as demonstrated by the findings of the DC, and it should be remembered that consent is an ongoing process of communication.
It is also worth considering an important point often misunderstood in that consent does not mean protection against poor treatment. If a risk attached to a procedure is described, understood and evidenced, valid consent can be present but this does not mean that any subsequent injury can be accounted for by saying “well I had consent” – for example, if a warning is provided to a patient that endodontic treatment might fail and it does as only two out of four canals have been filled, that does not mean there is a defence provided by a warning – the standard of the treatment has to stand up to scrutiny itself.
Should an adverse outcome arise, it is imperative that the patient does not perceive that they have been abandoned and efforts should be made to be seen to support the patient in the postoperative period. For more on this, please look into our Risk Prevention Mastering Adverse Outcomes workshops – more information is on our website.
For more on this, please look into our Mastering Adverse Outcomes workshops.