I chalked it up to possible nerve damage, because this is what the vet thought and the other cheek muscle was fine and he had no theeth problems.
1	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	2	nsubj	2:nsubj	_
2	chalked	chalk	VERB	VBD	Mood=Ind|Number=Sing|Person=1|Tense=Past|VerbForm=Fin	0	root	0:root	_
3	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	obj	2:obj	_
4	up	up	ADP	RP	_	2	compound:prt	2:compound:prt	_
5	to	to	ADP	IN	_	8	case	8:case	_
6	possible	possible	ADJ	JJ	Degree=Pos	8	amod	8:amod	_
7	nerve	nerve	NOUN	NN	Number=Sing	8	compound	8:compound	_
8	damage	damage	NOUN	NN	Number=Sing	2	obl	2:obl:to	SpaceAfter=No
9	,	,	PUNCT	,	_	2	punct	2:punct	_
10	because	because	SCONJ	IN	_	13	mark	13:mark	_
11	this	this	PRON	DT	Number=Sing|PronType=Dem	13	nsubj	13:nsubj	_
12	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	13	cop	13:cop	CheckUPOS=VERB
13	what	what	PRON	WP	PronType=Int	2	advcl	2:advcl:because	_
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	15:det	_
15	vet	vet	NOUN	NN	Number=Sing	16	nsubj	16:nsubj	_
16	thought	think	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	13	acl:relcl	13:acl:relcl	_
17	and	and	CCONJ	CC	_	23	cc	23:cc	_
18	the	the	DET	DT	Definite=Def|PronType=Art	21	det	21:det	_
19	other	other	ADJ	JJ	Degree=Pos	21	amod	21:amod	_
20	cheek	cheek	NOUN	NN	Number=Sing	21	compound	21:compound	_
21	muscle	muscle	NOUN	NN	Number=Sing	23	nsubj	23:nsubj	_
22	was	be	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	23	cop	23:cop	_
23	fine	fine	ADJ	JJ	Degree=Pos	13	conj	2:advcl:because|13:conj:and	_
24	and	and	CCONJ	CC	_	26	cc	26:cc	_
25	he	he	PRON	PRP	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	26	nsubj	26:nsubj	_
26	had	have	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	13	conj	2:advcl:because|13:conj:and	_
27	no	no	DET	DT	_	29	det	29:det	_
28	theeth	theeth	NOUN	NN	Number=Sing	29	compound	29:compound	_
29	problems	problem	NOUN	NNS	Number=Plur	26	obj	26:obj	SpaceAfter=No
30	.	.	PUNCT	.	_	2	punct	2:punct	_
