PAEDS Flashcards
A 13-year-old new child attends the surgery with a BPE score of 333 / 332?
1. What does a BPE score of 3 mean? (1)
- Pocketing 4-5mm or probing depth 3.5-5.5mm (only partially visible black band)
- What teeth should be probed in a 13-year-old to obtain BPE scores? (1)
- Modified BPE including probing of 16,11,26,36,31,46 (up until age 17)
- What is the normal depth from ACJ to alveolar bone crest?
Around 2mm
Biological width
What medical condition would cause a 13-year-old to have BPE scores of 3?
Epilepsy - tx with phenytoin
Immunosuppression - tx with cyclosporin
Calcium channel blocker treatment reduce blood pressure and symptoms of angina
Diabetes
OFG, leukaemia, agranulocytosis, cyclic neutropenia, granulomatosis
Ciclosporin (cyclosporin, also known as Neoral) is used to attempt to induce remission in acute severe ulcerative colitis. It is used in hospital when patients have not responded to standard treatment for inflammatory bowel disease, including steroids.
- If this patient isn’t on medication what might this be if they have BPE of 3 at 13?
Aggressive periodontitis early stages
- What investigations should you do when a child presents with BPE 3? (3)
- Full periodontal assessment- 6PPS, MP&BS, (S3 guidelines state carry out localised 6PPC for the areas of BPE of 3 at the end of treatment)
- Radiographs- bitewings or periapical
- Diet diary
- What is the treatment plan
- HPT- OHI & prevention, diet advice, modifications of risk factors and behavioural change, Supra PMPR, (refer to specialist- only at score 4), review after 3 months
Caries & Pulpal Pathology-
A 6-year-old child present with pain in lower right quadrant due to grossly carious 85 and buccal swelling. Patient also suffers from haemophilia A.
1. What is the likely diagnosis?
Periapical abscess due to gross caries
Need pulp diagnosis - Necrotic pulp
Apical diagnosis - PA abscess
6-year-old child present with pain in lower right quadrant due to grossly carious 85 and buccal swelling. Patient also suffers from haemophilia A.
2. What is the treatment of choice for this patient and why?
Pulpectomy with SSC placement as want to avoid XLA if possible due to increased chance of bleeding as a result of their bleeding disorder
Ex if required - refer to specialist centre (need to liaise with haemotologist for coagulation factor replacement or use of tranexamic acid )
As an interim measure may perform caries excavation and sediative dressing first.
- List the stages involved in primary pulpectomy
- LA
- Dental dam
- Removal of caries and roof of pulp chamber to gain access
- Remove coronal pulp with sterile excavator or large round steel bur
- Extripate the pulp to 2mm short of the apex to prevent damage to the permenant tooth germ (if isolation effective irrigate with sodium hypochlorite and if not use CHX)
- Obturate the canal with calcium iodoform paste
- Restore with GIC core and SSC
Name two haemostatic agents?
- Surgicel (oxidised cellulose)
- Tranexamic acid
- LA as vasocontrictor
- Resorbable gelatine sponge - gelfoam
- Ferric sulphate
In dentistry, ferric sulfate is used as a pulpotomy medicament to control pulpal bleeding, as an antibacterial agent and as a hemostatic reagent for restorative dentistry, for postextraction hemorrhage and for periradicular and endodontic surgery.
6-year-old child present with pain in lower right quadrant due to grossly carious 85 and buccal swelling. Patient also suffers from haemophilia A.
5. If this patient were to require an extraction what measures would need to be put in place?
- Consult with haemotologist prior to Ex
- may require pre-op tranexamic acid and factor 8 replacement available DDAVP
- Atraumatic technique
- Infiltration aesthesia generally used over blocks
- Ensure clot, using local haemostatic agents and suture the socket
- Review within a week
DDAVP is a drug used to effectively increase the concentration of factor VIII in the blood and to increase the clumping together of platelets to stop bleeding. It does not come from human plasma and it carries no risk of infection
Trauma & Splining-
1. What is the only occasion on which a splint should be used for primary teeth?
Flexible splint for 4 weeks for an alveolar bone fracture
What type of duration of splint treatment should be used for an avulsed tooth?
- Flexible splint for 2 weeks if EADT < 60 minutes
- Flexible splint for 4 weeks if EADT > 60 minutes
??
- What is the difference between a flexible and rigid splint?
Flexible splint attaches to one tooth either side
Rigid splint attaches to 2 teeth either side
- If EADT < 60 minutes what is you endodontic management?
- If open apex then chance of revascularization (30%) therefore leave alone and monitor; if loss of vitality (as opposed to continued root growth) then extirpate the pulp place NSCaOH and refer)
- If closed apex than RCT 0-10 days (sooner the better)after reimplantation with intracanal antibiotic-steroid (ledermix) paste for 2 months then replace intra-canal medicament with non-setting calcium hydroxide
- Within 3 months obturate with GP- sooner the better
- IF EADT > 60 minutes what is your management?
- For open apex don’t root treat tooth but replant and monitor (the same as you would do for EADT< 60 minutes)
- If closed apex scrub necrotic pulp from tooth and carry out extra-oral endodontics then replant tooth under LA and flexibly splint for 4 weeks (consider AB prescription)
- If extra-oral endodontics is not carried out then extirpate within 7-10 days of reimplantation and use non-setting calcium hydroxide as initial intra-canal medicament for 4 weeks prior to obturation with GP
A patient has avulsion of a permanent incisor.
1. What advice do you give on the phone?
- Reassure the patient
- Tell them to hold the tooth by the crown and not the root
- If visibly dirty then run under COLD water for 10s to clear debris
- Reimplant the tooth back into the socket and get them to bite on a piece of tissue (only for permenant tooth)
- Store in a medium (like saliva, milk or physiological saline)
- Seek dentist immediately
GIve 3 storage mediums for an avulsed tooth?
- Saliva (or buccal sulcus)
- Milk
- Physiological saline
- Blood
- What should you check upon arrival of the patient at the dental surgery? A patient has avulsion of a permanent incisor.
- The child doesnt have any serious injuries that require more emergency tx. Was the patient unconcious for any period of time.
- Ask how the incident occured
- How long was the tooth out of the mouth and a suitable storage medium(important for EADT)
- Can all of the tooth fragments be accounted for?
- ANy other oral injuries
- MH
- If child has had tetanus prophylaxis
What type of splint is advised for an avulsed tooth > and < 60mins EADT?
Flexible splint
Open and closed apex <60mins EADT - 2 weeks
Open and closed apex >60mins EADT - 4 weeks
What are the most common outcomes for avulsed permenant teeth?
- Discolouration
- Mobility
- Necrosis of the pulp
- Ankylosis
- Root resorption
- Pulp canal obliteration or sclerosis
- What is EADT?
This is the extra avleolar dry time and is the time that the tooth has been out of the mouth and not in an appropriate storage medium
Important as the longer the tooth is out of the mouth or a storage medium the more damaged the PDL gets and the less chance the tooth has of survival.
- What medical information is significant? For an avulsed permenant tooth?
- Any cardiac defects
- Is the child immunocommprimised
- Any medications
- Have they had a tetanus immunisation
A 10-year-old patient presents with an extrusion injury of an upper central incisor (11).
1. Draw and label your splint?
- 0.6mm stainless steel wire
- Acid etch 37%, prime and bond and then place composite resin on abutment teeth (bonded to one tooth either side of the extruded tooth)
- Sink contoured, passive wire into composite
- Shape composite over wire and light cure
- Smooth any rough composite and wire ends
- How long would you splint the extruded tooth for?
- Flexible splint for 2 weeks
- What 4 tests would you do at a check-up apart from a radiograph?
- Sensibility testing- EPT and ethyl chloride thermal
- TTP
- Percussion note
- Mobility
- Colour
- Sinus (tender in sulcus)
- (Displacement)
- He has external inflammatory resorption how do you manage this?
- Extirpate the pulp and carry out chemo-mechanical disinfection
- Place non-setting calcium hydroxide for 4-6 weeks to assess if resorption has stopped
- Replace with GP after 4-6 weeks
- If resorption continued, then plan replacement
- Radiograph of 11 given, describe what you see, give a diagnosis and mention how you manage this? (3 months)
- Widened PDL space, loss of surrounding lamina dura, irregular apical surface
- Irregular inflammatory root resorption
- RCT with calcium hydroxide setting, apical radicular surgery
- What is extrusion
- Partial displacement of the tooth out of its alveolar socket characterised by partial or total separation of the PDL resulting in loosening and displacement of the tooth
- The alveolar bone remains intact but the tooth will usually have some protrusive or retrusive orientation as well as axial displacement
A 10-year-old boy present to you after having fallen and banged his upper front tooth. On examination you diagnose a sub-luxation injury.
1. Give three diagnostic features of a sub-luxation injury?
- Increased mobility and TTP
- No disapclement of the tooth
- Bleeding from the gingival tissue
- What type of splint would you place, for how long and draw it below? Subluxation
- 2-week flexible splint (spans only onto two adjacent teeth)
- When would you review this patient? sub-luxation
- 2 week (splint off), 4 weeks, 6-8 week and 1 year
- Name two features you be assessing radiographically at review?
- Continued root development- width and length of canal
- Presence of absence of internal and external inflammatory resorption
- Presence of periapical infection
- (Comparison with opposite side)
- How would internal inflammatory resorption present clinically and radiographically, what is its mechanism and what medicament would you place?
- Clinically- Asymptomatic with no clinical signs and will response positively to sensibility testing
- Radiographically- ballooning of root canal which is usually round/oval and fairly uniform and continuous with canal tramlines (will not move with beam shift)
- Mechanism- Coronal pulp is necrotic but apical pulp is vital (needs patent blood supply), outermost protective odontoblast and pre-dentine layer damage resulting in exposure of underlying dentine to odontoclasts (fi left untreated lesion will grow till apical pulp necrotic)
- Management- Canal extirpation, chemo mechanical disinfection and placement of non-setting calcium hydroxide for 4-6 weeks before being replaced with GP
Patient attends with a fractured 11?
1. List two questions you would ask in regard to the traumatised tooth?
- When did it happen?
- How did it happen?
- Can they account for the missing fragment of the tooth?
- Any other symptoms
- List four things that determine the prognosis of the traumatised tooth? (4)
- Stage of root development (maturity of tooth- open or closed apex)
- Type of injury
- If PDL also damaged
- Time between injury and treatment (the longer before the exposed dentine is covered the more likely the tooth is to become non-vital)
- Presence of infection
- Mobility
- If pulp is exposed (Complicated vs non-complicated)
- Where do you suspect the fragment of the tooth is and how do you manage this?
- Swallowed fragment- A&E referral for stomach scan
- Inhaled fragment- A&E referral for chest X-ray
- Embedded in soft tissue- radiograph to confirm then remove and suture (for haemostasis) or refer to oral surgery for removal
- Tooth has an enamel-dentine fracture- what is the treatment plan for this type of trauma?
- Account for fragment
- Either bond fragment to tooth (risk of fragment becoming discoloured) or place composite/GI bandage until time for definitive treatment
- Line the restoration first if the fracture is close to the pulp (indirect pulp cap)
- Take 2 PA radiographs to rule our root fracture or luxation (percussion note also useful in checking for root fracture)
- Radiograph any lip or cheek lacerations to rule out embedded fragment if uncounted for
- Sensibility test and evaluate tooth maturity
- Consider definitive restoration- composite build up?
- Follow up 6-8 weeks and at 1 years- check radiographs for root development (thickening of dentine walls and continued root length formation), signs of internal and external inflammatory resorption and any periapical pathologies (comparison with contralateral tooth)
TRAUMA stamp important here
- What do you discuss with the patient regarding treatment of this trauma?
Enamel dentine fracture
- Inform patient of possible complications- discolouration, pain, sinus formation, infection, damage to adjacent teeth
- Inform the parent of the prognosis of the tooth- 5% risk of pulp necrosis at 10 years if no associated PDL injury
- Inform them on the treatment options available to gain valid consent
- Decide to place composite, patient has a heart valve defect- what would you change about your treatment?
- Treatment plan would not change
- If you fear there is pulp exposure may consult with cardiologist and they will inform you whether antibiotic cover is required or not
Patient attends with lateral luxation 18 months ago.
1. What 8 things are assessed in a clinical trauma review stamp? (4)
- Colour
- TTP
- Sinus (/tender in sulcus)
- Mobility
- EPT
- Ethyl chloride
- Percussion note
- Radiograph
- (displacement is also checked at first visit but not found on the trauma stamp)
- What is lateral luxation?
- Injury to the PDL involving displacement of the tooth (other than axially) in a lateral direction within its socket, usually accompanied by comminution or fracture of the labial or lingual alveolar plate. Characterised by partial or total separation of the PDL. In most cases the apex will be forced into the bone resulting in the tooth being non-mobile
- How long is a lateral luxation injury splinted for?
- Flexible splint for 4 weeks
- What kind of root resorption can occur with lateral luxation trauma? (1)
- External inflammatory resorption (or internal inflammatory resorption)
- What is the cause of external inflammatory root resorption? (1)
- PDL initially resorbed away as a result of initial damage to the PDL. Resorption is then propagated by necrotic pulp tissue via dentinal tubules (bacteria toxins move up tubules and stimulate osteoclasts to resorb the root and bone)
- (Caused by a prolonged inflammatory stimulus (from necrotic pulp) to the damaged root surface which allows continuation of the process of surface resorption)
- This overall causes progressive resorption of the external root surface
- What is the initial, short term and long-term management? of EIRR external inflammatory root resorption.
- Initially need to remove the source of inflammation- RCT to extirpate pulp (or peri-radicular surgery
- Perform chemomechanical disinfection and place of non-setting CaOH for 4-6 weeks
- After 6 weeks obturate with GP
- (NB. If cause is pressure stop ortho od remove impacted tooth)
- Short Term- Monitor and review for continued resorption
- Long Term- Monitor radiographically and if progressive resorption then plan ahead for prosthetic replacement (e.g. extract when temporary denture made then perhaps place bridge when old enough)
Explain to the patient that this RCT will fail in the future so eexplaining their possible treatment options for filling the space and making sure they understand the risk and benefits of each
- How would external inflammatory resorption appear clinically and radiographically?
- Clinically- negative response to pulp testing as pulp necrotic, may be TTP, may be mobile
- Radiographically- moth eaten appearance, root surface indistinct (PDL widened and loss of surrounding lamina dura) but internal tramlines of the tooth remain intact, may be shortening and blunting of root apices
Root Fracture-
1. Following root fracture, what types of healing are possible?
- Calcified tissue union across the fracture union (dentine like tissue)
- Connective tissue union across the fracture union (eburnation)
- Mixture of calcified and connective tissue across fracture union
- Bone/Osseous healing separating each fragment into two separate entities
- What is regarded as non-healing? root fracture
- Formation of granulation tissue between two fragments (dark halo around the tooth)
- How are root fractures managed?
- If coronal fragment is non-displaced then no treatment is required, simply monitor and give advice re soft diet and careful brushing of the area
- If coronal fragment is displaced them might consider cleaning the area then repositioning and splinting (LA may be required)
- For apical and middle third fractures splint for 4 weeks and for cervical root fracture splint for up to 4 months
- Patient instructions- soft food for 10-14 days, burhs with soft brush after every meal, apply 0.1% topical CHX in affected area with cotton swabs x2 daily for a week, warn about potential complications such as swelling, discolouration of crown, increased mobility and fistula and tell patients to watch for swelling of the gums as a result of associated infection
- How would you manage a patient with a fragment that has lost vitality?
- RCT coronal to fracture line
- Or extract tooth
Tooth 11 has traumatic exposure of the pulp.
1. What 2 factors would influence your choice of treatment?
- Size of exposure (less or greater than 1mm)
- Time since exposure (less or more than 24hrs)
- How would you treat a coronal fracture with pulpal exposure?
- If exposure less than 1mm and less than 24hrs since exposure (not TTP and postivie response to sensibility tests may consider direct pulp cap; LA, rubber dam, clean with water, disinfect with sodium hypochlorite, apply calcium hydrocie or MTA white to pulp exposure, restore tooth with composite
- If exposure more than 1mm or more than 24hrs since exposure carry out partial (Cveck) pulpotomy (progress to full pulpotomy if hyperaemic pulp or inability to control bleeding after removal of 2mm of pulp tissue)
Coronal 1/3 Fracture.
1. Why does coronal 1/3 fracture have the poorest prognosis?
- Due to difficulty stabilising
- Close to gingival margin so increased risk of bacterial invasion
Bleaching-
1. What are the advantages of non-vital bleaching?
- Simple procedure
- Tooth conserving
- Original tooth morphology remains
- Gingival tissue are not irritated by restoration
- Adolescent gingival level not a restorative consideration
- No laboratory assistance (no tray) required for walking bleach
- What are the disadvantages of non-vital bleaching?
- Potential complications- spillage of bleaching agents, failure to bleach, over bleaching, brittleness of crown
- Will regress over following years; results only semi-permanent so relapse is an issue
- Possibility for external cervical resorption only with old methods which used heat
- Won’t work where there is a large restoration so would need to replace the restoration
- Won’t work on amalgam intrinsic discolouration, fluorosis or tetracycline discolouration
- Briefly describe the walking bleach technique?
- Open up access cavity of tooth and use miniature rose head bur to remove root filling to below the gingival margin
- 10% carbamide peroxide bleach place on cotton wool and inserted
- Covered with dry cotton wool and then GIC
- Oxidising process allowed to proceed gradually over days
- Bleach is renewed, ideally every week (no more than every fortnight)
- Changed 6-10 times in total till happy with shade
- Place temporary non setting calcium hydroxide for 2 weeks to reverse acidity or instruct patient to stop bleaching 48hrs before the appointment
- Then consider final restoration- white GP and composite resin (gold standard- facility to re-bleach) or incrementally cured composite (no re-bleaching but possibly strengthens tooth)
- Briefly describe the inside-outside bleaching technique?
- Access cavity of tooth opened and left open (GI lining not necessary as bleach is bactericidal anyway)
- Custom made mouthguard with windows in the teeth you want to bleach made by lap
- Patient applied carbamide peroxide 10% to back of tooth and tray and wears mouthguard at all times except on eating or when cleaning the mouthguard
- Gel should eb changes every 2 hours or so
- Final restoration as in walking bleach technique
Eruption Dates-
1. What are the eruption dates for primary teeth?
- General rules- eruption begins at 6 months and is complete at around 2.5/3 years // lower before upper apart from lateral incisor
- A- 4-6 months
- B- 7-16 months
- D- 13-19 months
- C- 16-22 months
- E- 15-33 months
- From date of eruption it take primary root 1.5 years for primary tooth root to complete apexogensis
- What are the eruption dates for permanent teeth?
- General rules- lower before upper apart from 2nd premolars
- 6 years old- lower then upper 6, lower 1
- 7 years- upper 1, lower 2
- 8 years- upper 2
- 9 years- lower 3
- 10 years- lower then upper 4 and upper then lower 5
- 11 years- upper 3
- 12 years- lower then upper 7’s
- When do the roots fully form?
- Approximately 2-3 years after the crown erupts
Caries-
A 4-year-old patient presents with gross caries across her anteriors including the smooth surface.
1. What is your likely diagnosis?
- Nursing bottle or early childhood caries
Nursing bottle or early childhood caries
2. How does this occur?
- Occurs as a result of inappropriate use of feeding bottle and cusps- cariogenic drinks (milk or other drink) being fed to the child in bottles either at night, after toothbrushing just before bed or frequently during the day (sugars are inside the mouth for a prolonged period)- bottle used as a pacifier or child put to bed with bottle
- Can also occur if prolonged breastfeeding or child’s teeth not brushed (minimal fluoride exposure)
- What is your treatment plan? For early childhood caries, nursing bottle caries.
- Give advice- don’t take feeding cup or nursing bottle to bed at night, only allow the child water after toothbrushing, don’t give soya milk (or similar alternatives) unless for medical demands, try to avoid on demand breastfeeding especially at night, only allow child water (and milk- but gradually try to reduce) between meals, consider sugar free variation of drinks and sweets, if the child insists on sweet foods and drinks then limit them to meal times
- OHI- toothbrushing advice (<7 the parent should help with this), use of 1,000ppm fluoride toothpaste (pea sized= 0.25ml) 2x daily with manual or electric toothbrush
- Fluoride varnish 22,600ppm- 4x yearly
- Complete or partial caries removal with temporisation with GIC or hall technique SSC for posteriors
- Consider GA for extraction if un-cooperative or caries is gross
- What is the classic presentation of nursing bottle caries?
- Affects all the maxillary teeth as smooth surface caries around the gingival margin
- Lower incisors spared due to protection from the nursing position of the tongue (artificial nipple rests against palate while the tongue is extended over the lower incisors) but canines may be affected
- Maxillary incisors are the first to experience the cariogenic challenge and suffer the longest attack because of their early eruption
- If the habit continues the mandibular canines and all of the first primary molars will be subjected in sequence with their eruption order
7-year-old high caries risk patient
1. What factors make up the caries risk assessment criteria? (5)
- Clinical evidence
- Diet
- Saliva
- Fluoride
- Plaque
- Medical history
- Social history
- How often should you take bitewings for a high caries risk child? (1)
- Every 6 months (12-18 for normal risk)
- What toothpaste strength should be used for a 7-year-old? (1)
- 1,350-1500ppm
- How often would you place fluoride varnish in a high-risk child? (1)
- 4x year