Gap arthroplasty with active mouth opening exercises using an interocclusal splint in temporomandibular joint ankylosis patients

Maxillofacial Plastic and Reconstructive Surgery

Table 1 Summary of clinical assessment and patient information used in this study

No	Age/sex	Etiology	Diagnosis	Operation	PreOp MMO (mm)	PostOp MMO (mm)	Follow-up and MMO	PostOp complications	IOS thickness (mm)
1	23/F	Trauma, re-ankylosis after 2 times attempts of gap arthroplasty and interpositional gap arthroplasty	Bilateral, right fibrous, Lt bony ankylosis	Both gap arthroplasty and both coronoidectomy	15	38	6 yrs, 43 mm	Anterior open bite	6
2	15/F	Unknown, born with prematurity re-ankylosis, one previous operation	Unilateral, Rt bony ankylosis	Rt, gap arthroplasty and both coronoidectomy	10	40	6.5 yrs, 35 mm	_	3
3	6/M	Trauma in childhood 3 yrs ago	Unilateral, Rt bony ankylosis	Rt, gap arthroplasty and both coronoidectomy	5	40	7 yrs, 38 mm	_	7
4	61/M	Trauma	Bilateral, bony ankylosis	Both gap arthroplasty and both coronoidectomy	0	35	7 yrs, 40 mm	_	4
5	15/F	Septicemia in childhood, re-ankylosis after 3 times attempts	Unilateral, Rt bony ankylosis	Rt gap arthroplasty and both coronoidectomy	3	43	6.5 yrs, 42.5 mm	_	3
6	62/F	Trauma (1 yr), zygomatico-maxillary fracture	Unilateral, Lt pseudoankylosis	Lt coronoidectomy and Lt arthrocentesis	13	40	6.5 yrs, 37 mm	_	3
7	65/M	Trauma (20 yrs), Rt facial skin defect	Scar condition and fibrosis of skin	Commissurorrhaphy and Lt coronoidectomy	20	35	6.5 yrs, 37 mm	_	5
8	41/M	Osteomyelitis in left mandibular ramus	Chronic osteomyelitis	Both coronoidectomy and Lt saucerization	14	37	7 yrs, 36 mm	_	5
9	31/M	Unknown, coronoid hyperplasia	Coronoid impingement on both sides, stylohyoid ligament calcification	Both coronoidectomy and both stylohyoidectomy	14	36	6.5 yrs, 48 mm	_	3

MMO maximal mouth opening between both incisal tooth tip or between alveolar ridge, PreOp preoperative, PostOp postoperative (in the operation room), yr year, yrs years, Rt right, Lt left, IOS interocclusal splint